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Archives for 2009

Information Architecture

July 16, 2009 by Roy Johnson

large-scale Web site structure, navigation, and usability

When it first appeared in 1998, Information Architecture became an instant classic amongst information architects. It now appears in its third edition, much enlarged and updated. The new edition reflects the rapid expansion and technical sophistication of large interactive web sites in the last few years. Rosenfeld and Morville deal with all the issues raised in organising information and navigational systems in the design of large-scale sites. Their important starting point is a recommendation that big sites should use three types of information organisation, which they identify as hierarchical, database, and hypertext.

Information Architecture Visitors to a site should have more than one possible route to the same piece of information. They ask some quite fundamental and interesting questions in their updated chapters. These cover issues of organisation, labelling, navigation, and searching – plus new chapters on thesauruses and meta-data.

The new edition has been given many more case studies, and lists of resources on IA have been added, many of which did not exist at the time of the first edition, and there’s a very good bibliography which painlessly blends print and web-based information. Navigation has been expanded into global, local, and contextual systems, and there is a lot more detail on search engines.

Another section which has been considerably expanded is that on classification systems and ‘knowledge management’. That is – where to put things, how to arrange, label and store information.

There’s also a much-enlarged section on the management of web development projects – from the initial strategy meetings through content analysis and mapping, to delivery and maintenance.

They present real life case studies, including one which details how a strategy report was written for Weather.com. Anybody who needs help with report writing will profit from reading this chapter. ‘Information Architecture’ was a relatively new term only a few years ago, but now as you can probably guess, it is of use to anybody who needs to organise information, ideas, or even physical objects – such as books in a library.

There’s an excellent account of how to draw up site maps and flow diagrams which help to explain the deep level architecture of sites to those who are going to populate them with content.

The same is true for page layout diagrams – which they call ‘wireframes’. These test the arrangement of items on main pages before they are passed on to a graphic designer. Architecture and usability are tested before the application of a graphic. It’s rather like designing the layout of a web page with table borders switched on – before setting them to zero.

They take an enthusiastic line on the use of navigational metaphors (the shop, the office, the library) about which other commentators such as Barbara Fleming and Jakob Nielsen are more cautious. The argument against this approach is that the metaphor of an office or a library will not mean much to people who are not familiar with them. And of course the same is true for icons and symbols.

This is a book for serious designers, project managers, and of course information architects. It is also a contribution to design theory which, en passant, makes librarians into the heroes of the information age. The valuable experience embedded within it will make useful reading for anybody organising information, designing a site, or providing content for it. If you read the first or second edition, it’s worth reading the third for the wealth of new material.

© Roy Johnson 2006

Information Architecture   Buy the book at Amazon UK

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Louis Rosenfeld and Peter Morville, Information Architecture for the World Wide Web, Sebastopol (CA): O’Reilly, third edition, 2006, pp.461, ISBN: 0596527349


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Filed Under: Information Design, Web design Tagged With: Information architecture, Information design, Navigation, Structure, Usability, Web design

Information Architecture

July 25, 2009 by Roy Johnson

the basic principles of organising information

Books on Information Architecture are coming thick and fast at the moment. Christina Wodtke’s approach will appeal to anyone who wants to learn the main principles, without having to wade through lots of abstractions and jargon. Her written style is very much influenced by web-based writing. She is concise, straight to the point, and entertaining. She starts out by looking at the basics of navigation, screen layout, subject categorising, usability, and liquid pages.

Information ArchitectureAll the time, she keeps the site visitor in mind. It’s a friendly, practical approach, and she illustrates all her points with plenty of screenshots. The main novelty she has to offer is to puncture some of the common suppositions about web design. For instance she argues quite persuasively against a one-size-fits-all approach:

Beware of gurus peddling simple answers. Instead, seek better tools to help you think up better solutions. Think first. Design second.

As is common with good advice, a lot of it seems very obvious when spelled out – but it is useful to be reminded that on the homepage of a site you should ‘show people the range of your offerings’.

She also recommends ‘see also’ pages of the kind at which Amazon excel. If someone visits pages dealing in laptops and novels, there’s a good chance they will also be interested in software and magazine subscriptions.

There’s a particularly good chapter on meta-data where she explains the reason why ‘information about information’ is important. This also includes a clear account of controlled vocabularies – one of the latest issues in usability and Web promotion.

She explains the systems of what are called ‘global navigation systems’ – the links, buttons, and tabs which normally appear at the side(s) and top of every page.

The latter part of the book deals with the process of mapping out and designing a site. This is something that should be done with pencil and paper. She includes storyboarding techniques, sitemaps, content inventories, wireframes – and even illustrates how to conduct cheap, small-scale usability testing.

This is another top quality production from New Riders – who have almost cornered the market in books on this subject.

© Roy Johnson 2005

Information Architecture   Buy the book at Amazon UK

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Christina Wodtke, Information Architecture: Blueprints for the Web, Indianapolis (IN): New Riders, 2002, pp.348, ISBN: 0735712506


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Filed Under: Information Design Tagged With: Data management, Information architecture, Information design, Web design

Information Dashboard Design

June 18, 2009 by Roy Johnson

effective visual communication of data

Dashboards have become popular in recent years as powerful tools for communicating important information at a glance. They tend to imitate motor car fascias or small airplane cockpit controls and they are used for displaying sales figures, statistics, business information (BI) and any sort of key performance indicators (KPIs). They can be used for all sorts of purposes – monitoring stock market prices, showing the weather, recording production output, or listing web site usage.

Information Dashboard Design My blog for instance is monitored by a service which shows me with maps, graphs, and bar charts who has been visiting, where in the world they are located, how many entries they viewed, and which browser they were using. Stephen Few begins by looking at some examples and defining the issue of dashboards – which is not as simple as you might imagine, Then he looks as some examples of bad design. These include dial gauges with no numbers; pie charts whose slices don’t add up to 100; graphs with distorted axes; meaningless colour coding; and results presented in two and three-dimensional forms which occlude anything that happens to be behind them (as my web site analyser does for instance).

Next he deals with the principles of visual perception – how and why we see things as we do. It’s interesting that he follows exactly the same design principles as Edward Tufte, which is to simplify everything as much as possible, remove all unnecessary chart junk, and let the data speak for itself.

He shows examples of good design, and more importantly how to improve it. The not-so-hidden secret all the time is ‘Less is more’.

Next comes ‘a taxonomy of dashboard media’ – that is, an exposition of all the different ways data can be shown on screen. He shows graphs, bar charts, dials and gauges, pie-charts, and Edward Tufte’s new invention, sparklines. The merits and disadvantages of each system are very well illustrated, and he argues quite persuasively that there’s hardly ever a good reason for using a pie-chart. Reasons? They take up too much room, are hard to read, yield little, and the same information could be delivered more efficiently in other ways.

He shows how all these principles can be brought together to produce good design principles – but then finishes with something very instructive. It’s a design for a business information dashboard, followed by several alternative designs and critiques of them. He shows why, even though they might look superficially attractive, they have design flaws and don’t do the job as effectively.

This is a handsomely designed and well produced book which follows its own principles of clear presentation and efficient communication.

© Roy Johnson 2006

Information Dashboard Design   Buy the book at Amazon UK
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Stephen Few, Information Dashboard Design, Sebastopol, CA: O’Reilly, 2006, pp.211, ISBN: 0596100167


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Filed Under: Information Design, Web design Tagged With: Control panels, Dashboards, Information design, Web design

Information Design

June 29, 2009 by Roy Johnson

essays on the theory and practice of information design

There has recently been a great deal of debate amongst members of the design community about the status of their profession, the exact meaning of ‘information design’, and the nature of what it is they are supposed to be doing. This collection of essays is a contribution to that debate and an attempt to think about the future of information design. The first part of the book offers a number of theoretical statements, in the best of which Robert E. Horn – one of the earliest pioneers of writing about hypertext – provides a useful historical survey of designers of information.

Information DesignHe summarises his argument by claiming that there now exists a ‘visual language’ in which words, images, and shapes are combined into what he calls a ‘unified communication unit’. In another interesting essay, Romedi Passini discusses the issue of ‘wayfinding’ – which he points out is not merely a matter of signs. People navigate their passage through known and unknown terrain using markers and semiotics more subtle than pointing fingers and boards saying ‘This Way’. This essay is crying out for more illustration, which is rather surprising in a study of design.

Part two is concerned with practical applications, and offers examples as broad as tactile signage in an institution for visual disorders, graphic tools for thinking, and visual design in three dimensions. The longest and possibly most successful contribution is by C. G. Screven on signage in museums and other public places – successful because it unites theory and practice.

The third part deals with design in the field of information technology. An essay by Jim Gasperini breathes some new life into the collection with his consideration of fiction, drama, and hypertext, and there are brief excursions into fractal sculpture and multimedia.

If ‘information design’ is now a coherent discipline and an honorable profession, then it could do with asserting itself more forcibly than do some of the contributors here. [Louis Rosenfeld and Peter Morville’s Information Architecture for the World Wide Web should be compulsory reading for all of them.] However, it’s a start, and one which anybody engaged with the current debates will do well to study.

© Roy Johnson 2000

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Robert Jacobson (ed) Information Design, Cambridge, MA: MIT Press, 1999, pp.357, ISBN 026210069X


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Filed Under: Information Design, Theory Tagged With: Data management, Information architecture, Information design, Product design

Information Design a bibliography

October 28, 2009 by Roy Johnson

Information Design a bibliography  Espen J. Aarseth, Cybertext: Perspectives on Ergodic Literature, Baltimore: Johns Hopkins University Press, 1997, ISBN: 0801855780. Details at Amazon

Information Design a bibliography  Christopher Alexander, Sara Ishikawa, Murray Silverstein, A Pattern Language: Towns, Buildings, Construction, Oxford: Oxford University Press, 1977, ISBN: 0195019199. Details at Amazon

Information Design a bibliography  Laura Arlov, GUI Design for Dummies, Foster City (CA): IDG Books, 1997, ISBN: 0764502131. Details at Amazon

Information Design a bibliography  Rudolph Arnheim, Visual Thinking, Berkeley and Los Angeles (CA): University of California Press, 1969, ISBN: 0520018710. Details at Amazon

Information Design a bibliography  Robin Baker, Designing the Future: the computer transformation of reality, London: Thames & Hudson, 1993, pp.208, ISBN 0500015783. Well illustrated coffee-table book on product and information design, with emphasis on graphics and the arts.

Information Design a bibliography  Stuart K. Card, Jock D. Mackinlay and Ben Shneiderman Readings in Information Visualization: Using Vision to Think, San Francisco: Morgan Kaufmann Publishers, pp.686, 1999, ISBN 1558605339. A collection of scholarly papers, mainly from researchers at Xerox PARC – very technical – for specialists only.

Information Design a bibliography  Alan Clarke, Designing Computer-Based Learning Materials, London: Gower, 2001, pp.196, ISBN 0566083205. Guide to the principles of designing training and instructional materials – from conception through to testing and evaluation.

Information Design a  bibliography  Marlana Coe, Human Factors for Technical Communicators, New York (NY): John Wiley & Sons, 1996, ISBN: 0471035300. Details at Amazon

Information Design a bibliography  Stephen Few, Information Dashboard Design, Sebastopol, CA: O’Reilly, 2006, pp.211, ISBN 0596100167

Information Design a  bibliography  Jennifer Fleming, Web Navigation: Designing the User Experience, Sebastapol (CA): O’Reilly, 1998, pp.253, ISBN 1565923510. Excellent guide to the principles of web design and navigation. Focuses on information architecture plus site usability effectiveness rather than HTML coding. Highly recommended.

Information Design a  bibliography  Ben Fry, Visualizing Data, Sebastopol (CA): O’Reilly, 2007, pp.366, ISBN 0596514557

Information Design a bibliography  Jesse James Garrett, The Elements of User Experience, Indianapolis (IN): New Riders, 2003, pp.189, ISBN 0735712026.

Information Design bibliography Thea M. van der Geest, Web Site Design is Communication Design, Amsterdam: John Benjamins, 2001, pp.165, ISBN 9027232024

Information Design a bibliography  Robert L. Harris, Information Graphics: A Comprehensive Illustrated Reference, New York/London: Oxford University Press, 1999, pp.448, ISBN: 0195135326. Details at Amazon

Information Design a  bibliography  James Hartley, Designing Instructional Text, London: Kogan Page, 3rd edn 1994, pp.183, ISBN 074941037X. Guide to the presentation of instructions – from paper size, through clear writing, to the use of diagrams and illustrations.

Information Design a  bibliography  William K. Horton, Designing Web-Based Training : How to Teach Anyone Anything Anywhere Anytime, John Wiley & Sons, 2000, pp.640, ISBN: 047135614X. Best-selling guide to all aspects of instructional design and writing for web-based training materials.

Information Design a  bibliography  William K. Horton, Illustrating Computer Documentation, New York (NY): John Wiley and Sons, 1991, ISBN: 0471538450. Details at Amazon

Information Design a  bibliography  William K. Horton, Designing and Writing Online Documentation, New York (NY): John Wiley and Sons, 1994, ISBN: 0471306355. Details at Amazon

Information Design bibliography  Bob Hughes, Dust or Magic: Secrets of Successful Multimedia Design, London: Addison-Wesley, 2000, pp.264, ISBN 0201360713. Amusing and thought-provoking study of working on multimedia projects – from web design to CD-ROM and interactive video.

Information Design a bibliography  Information Design Journal. http://www.benjamins.nl

Information Design a  bibliography  Robert Jacobson (ed) Information Design, Cambridge (MA): MIT Press, 1999, pp.357, ISBN: 026210069X. Collected papers setting out arguments for the professional status of information designers – with examples of their work.

Information Design a bibliography  James Kalbach, Designing Web Navigation, Sebastopol (CA): O’Reilly, 2007, pp.394, ISBN 0596528108

Information Design a bibliography  Ellen Lupton and Abbott Miller, Design Writing Research: Writing on Graphic Design, London: Phaidon, 1996, pp.211, ISBN: 0714838519. This is a beautifully designed and exquisitely illustrated book which is a must for anyone interested in graphics, information design, typography, or media studies.

Information Design a bibliography  Patrick J. Lynch and Sarah Horton, Web Style Guide, New Haven: Yale University Press, 1999, pp.164, ISBN: 0300076754. Excellent web site design guide. Originally written for medical students at Yale. Concentrates on design principles and navigation.

Information Design a bibliography  David Macauley, Cathedral: The story of its construction, Boston: Houghton Mifflin, 1973, ISBN: 0395175135. Details at Amazon

Information Design a bibliography  Robert McKim, Experiences in Visual Thinking, (2nd edn) Boston: PWS Publishing Company, 1972, ISBN: 0818504110. Details at Amazon

Information Design a bibliography   Peter Morville, Ambient Findability, Sebastopol, CA: O’Reilly, 2005, pp.188, ISBN 0596007655

Information Design a bibliography  Kevin Mullet and Sano, Darrell, Designing Visual Interfaces: Communication Oriented Techniques, Englewood Cliffs (NY): Prentice Hall, 1995, ISBN: 0133033899. Details at Amazon

Information Design a  bibliography Jennifer Fleming, Web Navigation: Designing the User Experience, Sebastopol: O’Reilly, 1998, pp.253 plus CD-ROM, ISBN 1565923510

Information Design a  bibliography  Jakob Nielsen, Usability Engineering, San Francisco (CA): Academic Press Professional/Morgan Kaufmann, 1994, ISBN: 0125184069. Details at Amazon

Information Design a  bibliography  Jakob Nielsen, Designing Web Usability: The Practice of Simplicity, Indianapolis (Ind): New Riders, 2000, pp.420, ISBN: 156205810X. Nielsen puts speed and simplicity of access above all else in this tutorial on Web site design which pulls no punches. Fully illustrated with good and bad examples. Recommended.

Information Design a  bibliography  Jakob Nielsen and Marie Tahir, Homepage Usability: 50 websites deconstructed, Indianapolis, (Ind): New Riders, 2002, pp.315, ISBN: 073571102X. Neilsen shows the strengths and weaknesses of famous web sites – and offers his own makeovers of their home pages.

Information Design a  bibliography  Donald A. Norman, The Design of Everyday Things (formerly The Psychology of Everyday Things) New York: Doubleday/Currency, 1998, ISBN: 0385267746. Classic study of usability in modern product engineering – establishes the principles of user-centred design. Highly recommended.

Information Design bibliography  Elizabeth Orna, Information Strategy in Practice, London: Gower, 2004, pp.163, ISBN 0566085798.

Information Design a  bibliography  Elizabeth Orna, Making Knowledge Visible, Aldershot, UK: Gower, 2005, pp.212, ISBN 0566085631.

Information Design a bibliography  Elizabeth Orna with Graham Stevens, Managing Information for Research, Buckinghamshire: Open University Press, second edition 2009, pp.271, ISBN 0335221424

Information Design a bibliography  Elizabeth Orna, Practical Information Policies, Hampshire: Gower, 2nd edn, 1999, pp.375, ISBN: 0566076934.

Information Design a  bibliography  James G. Paradis, and Muriel L. Zimmerman, The MIT Guide to Science and Engineering Communication, Cambridge (MA): MIT Press, 1997, ISBN: 0262161427. Details at Amazon

Information Design a bibliography  William Pena, Problem Seeking: An Architectural Programming Primer, (3rd edn) Washington (DC): American Institute of Architects Press, 1987.

Information Design a  bibliography  Jonathan and Lisa Price, Hot Text: Web Writing that Works, Indianapolis (IN): New Riders, 2002, pp.507, ISBN 0735711518. Professional-level manual on how to write, structure, and edit information for the Web. Highly recommended.

Information Design a bibliography  Louis Rosenfeld, and Peter Morville, Information Architecture for the World Wide Web, Sebastapol (CA): O’Reilly, 1998, pp.224, ISBN 1565922824. Advanced level web design concepts, focussing on the principles of efficient labelling, searching, and navigational aids. Highly recommended.

Information Design a bibliography  Jeffrey Rubin, Handbook of Usability Testing, New York (NY): John Wiley and Sons, 1994, ISBN: 0471594032. Details at Amazon

Information Design a  bibliography  D. Sano, Designing large-scale web sites: A visual design methodology, New York (NY): John Wiley & Sons, 1996, ISBN: 047114276X. Details at Amazon

Information Design a bibliography  Karen Schriver, Dynamics in Document Design, New York (NY): John Wiley and Sons, 1997, ISBN: 0471306363. Wide-ranging academic and practical study in design theory and applications – with arguments for professionalism in design. Recommended.

Information Design a bibliography  Nathan Shedroff, Experience Design, Indianapolis (IN): New Riders, 2001, pp.304, ISBN 0735710783. Double page graphic spreads of photos and web sites, with accompanying comments – all in avant garde [hard to read] typographic layout.

Information Design bibliography   Jenifer Tidwell, Designing Interfaces, Sebastopol, CA: O’Reilly, 2005, pp.331, ISBN 0596008031.

Information Design a bibliography  Edward Tufte, The Visual Display of Quantitative Information, Cheshire (CT): Graphics Press, 1983, ISBN 096139210X. The first of Tufte’s now-famous, beautifully illustrated books on information design in theory and practice. Highly recommended.

Information Design a bibliography  Edward Tufte, Envisioning Information, Cheshire (CT): Graphics Press, 1990, pp.126, ISBN 0961392118. The second in the Tufte Trilogy – focussing on ‘increasing information depth on paper’. Just as attractive as the other volumes. Highly recommended.

Information Design a bibliography  Edward Tufte, Visual Explanations. Images and quantities, evidence and narrative, Cheshire (CT): Graphics Press, 1997, pp.156, ISBN 0961392126. More from Tufte – arguing the need for accuracy, detail, precision, and truth in the presentation of quantities. Highly recommended.

Information Design a bibliography  Jeffrey Veen, The Art & Science of Web Design, Indianapolis (IN): New Riders, 2001, pp.259, ISBN 0789723700. How the Web works, and why user-centred design is necessary. Analyses of successful sites, and how to use style sheets to control the layout of your pages. Highly recommended.

Information Design a bibliography  Toni Weller (ed), Information History in the Modern World, London: Palgrave Macmillan, 2011, pp.211, ISBN: 0230237371

Information Design a bibliography  Peter Wildbur and Michael Burke, Information graphics: Innovative solutions in contemporary design, London: Thames and Hudson, 1998, ISBN: 0500018723. Details at Amazon

Information Design bibliography  Robin Williams and John Tollett, The Non-Designer’s Web Book, Berkeley (CA): Peachpit, 2nd edn, 2000, pp.304, ISBN 0201710382. Beginners’ design manual – with emphasis on graphic design. Well illustrated and nicely designed. Details at Amazon

Information Design a bibliography  Christina Wodtke, Information Architecture: Blueprints for the Web, Indianapolis (IN): New Riders, 2002, pp.348, ISBN 0735712506. Gentle and easy-to-read introduction to the main concepts of Information Architecture. Well illustrated with screenshots. “Think first. Design second.”

Information Design a bibliography  Richard Saul Wurman, Information anxiety: What to do when information doesn’t tell you what you need to know, New York: Doubleday/Bantam, 1989, ISBN: 0553348566. Details at Amazon

Information Design a bibliography  H. J. G. Zwaga, T. Boersma & H. C. M. Hoonhout (eds) Visual Information for Everyday Use: Design and Research Perspectives, London: Taylor and Francis, 1999, pp.338, ISBN 0748406719. Details at Amazon

© Roy Johnson 2009


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Information Strategy in Practice

July 13, 2009 by Roy Johnson

practical information architecture – projects and policies

Elizabeth Orna is an information architect and strategist whose earlier work Practical Information Policies has become a classic text in this field. Her latest work Information Strategy in Practice is designed for a number of potential readers: students preparing to enter the information professions; working professionals; and senior managers in other specialisms who have responsibility for information activities. It’s something of a reworking of her earlier material, because the practical case studies on which it is based have been revisited and the lessons to be learned are presented here.

Information Strategy in Practice She starts out with some definitions of knowledge and information, stressing the interdependence of one on the other with a witty quote from Samuel Butler: “a chicken is merely the egg’s way of making another egg”. The organisations she investigates range from The Australian Securities and Investment Commission, to the Surrey police and the Tate Gallery. Her claims for the improvements that have been brought about by clear information policies there are well born out if you look at the Tate’s web site which has improved enormously of late, and is a model of clear structure and transparent navigation.

She recognises that although the people in organisations are supposed to work co-operatively and honestly towards a common goal, they often don’t. Information is sometimes not shared. I wish she had taken this further to consider departments which work in competition with each other, withhold information, and (in government) spy on each other.

There’s a very interesting and persuasive defence of the importance of taxonomy, classification systems, labelling, metadata, and indexing. Information architecture buffs will like this.

She finishes with some practical lessons gained from ‘difficult’ projects and some very clear guidelines for avoiding the worst mistakes. It’s not as substantial a work as her earlier Practical Information Policies, but this is one which information scientists will want to add to their list of recommended reading.

© Roy Johnson 2005

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Elizabeth Orna, Information Strategy in Practice, London: Gower, 2004, pp.163, ISBN: 0566085798


Filed Under: Information Design Tagged With: Data management, Information design, Information strategies, Information Strategy in Practice

Information Technology glossary

October 27, 2009 by Roy Johnson

computers, information technology, and the Internet

Access provider
an organisation that provides access to the Internet. Also known as Internet Service Provider (ISP)

Address
The identification of a physical or virtual distinct entity in a network. On the Internet, this network address is called a URL (Uniform Resource Locator). For instance: http://www.gsh.org. [It is important to type these accurately.]

Anonymous ftp
A publicly available Internet file site. Users must sign on as anonymous and enter their email address to connect to an anonymous ftp site.

Apache
An open source Web server package, mostly used on Linux and Solaris platforms.

Applet
A self-contained mini-executable program, such as one written in the Java programming language. It connects with or is designed to work with a larger ‘partner’ program.

Application servers
Software used to provide an interface between systems to enable Web services.

Archie
A program that locates files that are freely available on anonymous ftp sites across the Internet. To use Archie, telnet to one of these sites and login as archie. Type help to obtain full instructions.

ASCII
American Standard Code for Information Interchange. A standard for digital representation of letters, numbers, and control codes; understood by most computers.

ASP
Active Server Pages – a scripting language created by Microsoft for dynamically created web pages and database functions. Web pages created with ASP usually have an .asp suffix.

Attachment
A binary file (such as a document, spreadsheet, or graphic) which is delivered as part of an email message. [NB – some mailing systems will not accept attachments.]

AUP
Acceptable Use Policy. A binding document signed by all users that explains the rules of Internet use at an institution.

Auto responder
An email message that is sent automatically in response to a message to another email address. Also known as Autobot or Infobot.

Backbone
The Central network infrastructure of the Internet is often referred to as the backbone and its allows data to travel from one network to another.

Backup
To make a second copy of a file as a safety measure. The copy may be held on a floppy disk, a zip disk, or on CD-ROM.

Bandwidth
A Term used to describe how much data you can send through a connection to the Net. The transmission capacity of a given medium, in terms of how much data the medium can transmit in a given amount of time. The greater the bandwidth, the faster the rate of data transmission. Information carrying capacity of a communication channel.

Baud rate
The speed at which a modem can deal with information, measured in bits per second, 56Kbps is currently fastest.

Binary
Files which contain eight-bit bytes (as distinct from ASCII files which contain seven-bit bytes). Some systems can only accept ASCII.

BIOS
Basic Input-Output System. This is the small but fundamental program which starts up your computer and allows you to access your software programs.

Bit
An acronym for BInary digiT. It is the basic unit of information in the computer world. A bit is a digit in binary form and carries one of two
values, 0 or 1.

Bitnet
An autonomous network of academic and research sites.

Bookmark
A word or picture ‘marked’ so that you can jump to it by name from
within a list. Also used by browsers to mark frequently visited web sites.

Boot
To switch on a computer. If the machine is re-started whilst running, this is called ‘re-booting’.

Browser
Software that allows users to access and navigate the World Wide Web. Some Web browsers, such as Mosaic and Netscape, are graphical. Lynx is a text-based browser.

BBS
Bulletin Board Service. A forum for users to browse and exchange information. Computer BBSs are accessible by telephone via a personal computer and a modem. Many BBSs are small operations run by a single person that allow only several users to log on at the same time. Some are much larger and allow hundreds of users to login simultaneously to use the system. Huge, commercial examples are America Online, CompuServe, and Prodigy.

Byte
A single computer character, generally eight bits. For example, the letter ‘G’ in binary code is 01000111.

Cache
A section of computer memory set aside for storing frequently-used data from a disk drive, speeding up the transfer of information.

Cascading style sheets
An extension to HTML which allows style features (colour, font size, spacing, and page-layering) to be specified for certain elements of a hypertext document. CSSs are especially useful for making a global change to multiple web pages – because the style is specified just once, often in a separate file.

CD-ROM
Compact Disk – Read Only Memory: A record like storage medium that uses digital and optical laser technology to store about 600Mb of text, pictures, and sound on a single disk. With newer versions (CD-ROMXA, CDTV, CD-i) animations and moving pictures can be retrieved from the discs.

CD-R
Compact Disk – Recordable: blank compact disks on which data can be recorded – but once only.

CD-RW
Compact Disc Re-Writable format: these are blank compact disks that can be recorded over and over again, like a floppy disk.

CGI
Common Gateway Interface – an interactive system installed on Web servers to automatically process information entered into Web page forms.

Checkbox
A small square box which, when clicked on, displays a cross or
tick to show that an option has been selected.

Chip sockets
Most of the microchips used in a computer are soldered directly to the circuit boards but some, including the main processor and some memory components, are mounted into sockets. This is so that they can be easily replaced or upgraded.

Clipboard
A section of a computer’s memory where you can temporarily copy chunks of text, data, graphics, or pictures. Once in the clipboard, the item can be pasted into another part of a document, or transferred to any other application. The clipboard normally holds one object at a time.

Command prompt
The C:> sign in DOS at which codes are typed. These commands control the computer. For many people, this system has been replaced by the Graphic User Interface [GUI] of Windows.

Commercial online services
A company that, for a fee, allows computer users to dial in via modem to access its information and services, which can include Internet access. Examples are America Online, CompuServe, Delphi, and Prodigy.

Compression
A technique to reduce the size of a file in order to make it more manageable and quicker to download. Compressed files have to be extracted using a utility such as PKZip or WinZip. Such files usually have a .zip extension.

Control panel
This is where many of Window’s settings can be viewed. Here you will find icons for most functions including printers, modems and sound.

Cookies
Small text files created by an Internet web site and stored on the user’s computer. A cookie contains information that can help speed access on subsequent visits, such as passwords and details of the user’s display facilities.

CSS (Cascading Style Sheets)
A way of assigning visual style to the content of Web pages. The style sheet deals with colour, fonts, and the position of text – leaving HTML code to describe the structure of the content.

DBA
DataBase Administrator – is software which administers databases. It can carry out the maintenance of a database, including the applications and content structure.

Database
A computer holding large amounts of information that can be searched by an Internet user. A storehouse of information on the Net.

Default setting
The computer or software settings made by the manufacturer. These will remain in place unless you decide to change them.

Defragmentation
Over time, the files on a computer’s hard disk drive become disorganised. Running a defragmentation program restores order and speeds up the reading and writing of data.

DHTML
Dynamic HTML – an integration of JavaScript, Cascading Style Sheets, and the Document Object Model. With DHTML, the content of a web page can move across the screen or respond to user inputs.

Dialogue box
A box which appears on screen, inviting input from the user. Usually to set options, or choose a name for saving files.

Dialup Internet connection
Lets a user dial into an Internet service provider using a modem and telephone line to access the Internet. The user is presented with a text-based set of menus which are used to navigate the Internet. (See SLIP or PPP connections)

Directory
A list of files or other directories on a computer at an Internet site. (Same thing as a folder.)

Domain
The part of the Internet address that specifies your computer’s location in the world. The address is written as a series of names separated by full stops. The most common top level domains are .edu education (US), .net network resource, .com commercial, .gov public bodies

DOS
Disk Operating System. This is a standard operating system, created by Microsoft before the dawn of Windows. DOS manages how files are stored on your computer. It is controlled through commands typed at the command prompt. Even Windows 95 and Windows 98 are still fundamentally dependent on DOS.

Download/upload
To download is to transfer a file from another computer to the user’s computer. To upload is to send a file to another computer.

DVD
Digital Video Disk: This new medium can store large amounts of data on one disk that looks like a CD, including full length films with high-quality sound and pictures.

E-commerce
Performing business transactions on the Internet – which may include the use of credit cards, ‘shopping trolleys’, forms, and secure servers.

Email
Allows users to send and receive messages to each other over the Internet.

Email address
A code representing a unique email user on the Internet. Examples might include – joe-bloggs@sitename.com, g.allthorpe@yahoo.co.uk

Emoticons
Smileys [ these things 🙂 ] and other character art used to express feelings in email communication.

Encryption
A process that turns files into gobbledegook so that they cannot be read, other than by programs containing the appropriate password-protected encryption software.

Executable files
These are programs or self-extracting files with an .exe filename extension. Clicking on an executable file will start the program running.

Expansion cards
Small circuit boards which are plugged into the main motherboard. They are used for controlling the video output, processing sounds, or communicating with modems and network cards.

Extensions
Files are identified by a three or four letter or number code, called an extension. This comes after the full stop following the filename. Common types include .doc and .txt for word-processor documents. Files ending in .gif and .jpg generally contain images. Files ending in .exe and .com usually contain executable programs which load into memory and carry out a set of instructions.

Extranet
A type of Internet Web site that is a closed community protected by a password and/or firewalls. It is typically provided by businesses for suppliers and key customers.

FAQ
Frequently Asked Questions. Files on the Net which store the answers to common questions. If you are stuck, check the FAQs first, before you ask you own question.

FAT
File Allocation Table. The part of a computer’s disk system that decides how and where disk storage space is allocated.

FTP
File Transfer Protocol. An application program that uses TCP/IP protocol to allow you to move files from a distant computer to a local computer using a network like the Internet.

Filter
Hardware or software designed to restrict access to certain areas on the Internet.

Finger
Software that allows the user to enter the address of an Internet site to find information about that system’s users or a particular user. Some finger addresses return other topic-specific information.

Firewall
A security system, usually for networked computers, which controls access in and out of the network.

Flame
To send a harsh, critical email message to another user, usually someone who has violated the rules of netiquette. May be used as a verb or a noun.

Folder/Directory
Two words for the same thing – a space on your hard disk to store related files or documents.

Frames
A device in HTML which allows multiple windows to be viewed simultaneously in one browser screen. Often used by Web designers to assist navigation.

Free-Net
Any one of more than two dozen freely accessible Internet sites, primarily offering community and educational information.

Freeware
Software programs that are free to use, but the author retains control of the original code.

Gigabyte
A measurement of storage space. Equal to a thousand megabytes.

Gopher
A menu-based system for browsing Internet information.

GUI
Graphical user interface. Software designed to allow the user to execute commands by pointing and clicking on icons or text. It’s pronounced ‘Gooey’.

Hacker
A computer user who illegally visits networked computers to look around or cause harm.

Hard disk
A high capacity storage device that a computer uses for programs and data, measured in megabytes or gigabytes. Information held on a hard disk is safe when the power is withdrawn.

Hits
The number of requests for files made to a Web server. A much misunderstood term. It is not the number of unique visitors. A typical Web page is made up of one HTML file, plus a number of graphics. One request for this page results in several hits.

Home page
The first page a user sees when visiting a World Wide Web site.

Host
An Internet company providing storage space for web sites on their server computer(s).

HTML
Hypertext Markup Language. The programming language of the World Wide Web, HTML software turns a document into a hyperlinked World Wide Web page.

HTTP
HyperText Transfer Protocol: The protocol used to provide hypertext links between pages. It is the standard way of transferring HTML documents between Web servers and browsers.

HTTPS
HyperText Transfer Protocol Secure – is used to secure Web sites by using encrypted traffic to and from the user by means of Secure Socket Layer (SSL).

Hypertext/hyperlink
A highlighted word or graphic in a document that, when clicked upon, takes the user to a related piece of information on the Internet. When the cursor passes over a link, it usually changes from an arrow to a pointing hand.

Icon
A small picture displayed on-screen to identify a command or file. Many word-processors use an icon of a magnifying glass to indicate it will start a search function.

Infobot (or mailbot)
An email address that automatically returns information requested by the user.

Internet
The global network of networks that connects more than three million computers (called hosts). The Internet is the virtual space in which users send and receive email, login to remote computers (telnet), browse databases of information (gopher, World Wide Web, WAIS), and send and receive programs (ftp) contained on these computers.

Internet account
Purchased through an Internet service provider, the account assigns a password and email address to an individual or group.

Intranet
A private internal network based on TCP/IP, usually for the information of staff within a business or an organisation.

IRC
Internet Relay Chat. Interactive, real-time discussions between people using text messages. Users log into designated Net computers and join discussions already in progress.

Internet server
A computer that stores data that can be accessed via the Internet.

ISDN
Integrated Services Digital Network – a set of communications standards offered by telephone carriers which provides users with fast Internet connections.

ISP
Internet Service Provider. Any organization that provides access to the Internet. Many ISPs also offer technical assistance to schools looking to become Internet information providers by placing their school’s information online. They also help schools get connected to the Net.

Internet site
A computer connected to the Internet containing information that can be accessed using an Internet navigation tool such as ftp, telnet, gopher, or a Web browser.

IP address
Every computer on the Internet has a unique numerical IP address
assigned to it, such as 123.456.78.9.

J2EE
Java 2 Enterprise Edition. Middleware written in Java used in critical, large-scale networked developments, such as electronic banking.

Java
A programming language developed by Sun Microsystems used for cross-platform Web-based applications. Its primary contribution to the Web has been in the form of Java Server Pages (JSP), J2EE  and it is also used in ‘applets’ – mini-programs written in Java that run in browsers.

JavaScript
A scripting language developed by Netscape that adds interactivity to web pages. Its name reflects a shared syntax with the Java programming language.

JPEG
A widely-used graphic file format. Acronym of the Joint Photographic Experts Group. (It’s pronounced ‘Jay-peg’.)

JSP
Java Server Pages – a scripting language based on Java for developing dynamic Web pages and sites. It is typically used on Solaris and Linux platforms.

Junk email
Email messages which are received, but not asked for or even wanted. (Also known as ‘spam’.)

Keyword
A word or words which can be searched for in documents or menus.

Killer application
A software program which is so successful that it corners the market, or inspires people to upgrade their equipment in order to be able to use it.

Knowbot
Software that searches Internet ‘white pages’ and lists of users at large institutions, to find a person’s name and address.

LAN
Local Area Network: A private transmission that interconnects computers within a building or among buildings for the purpose of sharing voice, data, facsimile, and/or video.

Linux
A version of the Unix operating system designed to run on PCs. Controversial because it has been developed as part of the Open Sources movement and given away free of charge. Very popular for Web servers and appliances.

Logon
To sign on to a computer system.

Mailing lists (or Listserv)
There are more than 4,000 topic-oriented, email-based message bases that can be read and posted to. Users subscribe to the lists they want to read and receive messages via email. Mailing lists are operated using listserv software. Thus, many users call mailing lists ‘listservs’. There are two types of lists: moderated and unmoderated. Moderated lists are screened by a human before messages are posted to subscribers. Messages to unmoderated lists are automatically forwarded to subscribers.

Megabyte
A measure of storage space. 1 Mb roughly translates to a million characters of text, or 180,000 words.

Menu
A list of information that leads to documents or other menus.

Middleware
Applications and servers designed to take content from otherwise incompatible back-end data sources (often legacy – that is outdated – systems) and pass it on to Web front-ends.

Mirror
Some FTP sites are so heavily used that in order to relieve the load, their entire contents are copied to and made available by other sites. These are then known as ‘mirror sites’.

Modem
Acronym for MOulate DEModulate. An electronic device that attaches to a computer and links that computer to the online world via a telephone line. Modems are available for any computer, can be internal or external, and come in several speeds, known as the baud rate. The higher the baud rate, the faster the modem. A modem of 56,000 baud is now considered the standard. Most Internet service providers allow you to dial into their systems at rates up to 33,600 baud and beyond.

Motherboard
The main printed circuit board inside a computer, containing the main processing chip, memory chips, plus all the other circuits needed to control the disk drives, the keyboard, and to communicate with plug-in extension cards.

MP3
A popular, highly compressed file format used for music.

MPEG
A family of multimedia standards developed by the Motion Picture Experts Group, commonly used to refer to audio or visual files saved with MPEG compression schemes. Files usually have an .mpg extension (pronounced ‘Em-Peg’).

MySQL
An Open Source development of the SQL language for talking to databases. Most commonly used amongst small business users and run on Linux operating systems.

National Information Infrastructure
The official U.S. government name for the Internet and other computer networks. Commonly known as the Information Superhighway.

Netiquette
The rules of conduct for Internet users. Violating netiquette could result in flaming or removal from a mailing list. Some service providers will even cancel a user’s Internet account, denying him or her access to the Net, if the violation is severe enough.

Netscape
Internet navigation software that allows users to access information through a graphical, point-and-click interface rather than text-only screens or menus. Netscape is known as a Web browser because it accesses World Wide Web information formatted into special home pages using hypertext. Other graphical Web browsers include Microsoft’s Internet Explorer, Mozilla Firefox, Google Chrome, and Opera.

Net surfer
Someone who browses the Internet with no definite destination.

Network
A group of computers that are connected in some fashion. Most school networks are known as LANs, or Local Area Networks, because they are networks linking computers in one small area. The Internet could be referred to as a WAN, or a Wide Area Network, because it connects computers in more than one local area.

Newsgroups
These are the bulletin boards of the Internet. There are around 20,000 groups covering every subject under the sun. Most IAPs have a newsgroup server which periodically takes all new messages from a newsgroup feed and adds the messages which have been posted by its own users. To access the newsgroups stored on your IAPs newsgroup server you need a newsreader program.

OCR
Optical Character Recognition. Software that translates a scanned image of printed or typewritten text into a plain text file that can be read by a word processor.

Online/Offline
When you are logged onto a computer through your modem, you are said to be online. When you are using your computer but are not connected to a computer through your modem, you’re said to be working offline.

Operating System
The operating system or OS is a program, or a collection of programs, that manages all your computer’s resources – disk drives, RAM, display screen – and controls how files are stored and retrieved.

Packet
A bundle of data transmitted across a network. It contains the source address (where the packet has come from) the destination address (where it’s going to) a packet identifier (what sort of packet it is) and the data being sent.

PC card
Short for PCMCIA – Personal Computer Memory Card International Association. It is a standard-sized module used in laptops for memory expansion and other peripherals, including modem cards.

PCI
Peripheral Component Interconnect. A type of connector on computer motherboards, used for expansion or adapter cards.

PDF
Portable Document Format – a file format developed by Adobe Systems for capturing formatted page layouts for distribution. Requires the proprietary Adobe Acrobat Reader, which is now given away free of charge.

PHP
A scripting language used for developing dynamic Web pages and sites. It is typically used on Solaris and Linux platforms.

Plug-in
An extra bit of software which has to be added to a Web browser before a certain type of file can be viewed. Recent browsers come with the most popular plug-ins pre-installed.

Portal
A Web site that acts as a doorway or introduction to many other Web sites that are sometimes grouped into categories [Yahoo is a famous example].

Posts
Email messages sent to a mailing list or Usenet newsgroup to be read by subscribers or others on the Internet.

Program
Used as a noun – a series of instructions which tell a computer what to do. Used as a verb – the act of writing or revising a program.

Public domain software
Shareware programs that are free to use and modify, as the author has relinquished control over the code.

RAM
Random Access Memory. A computer’s working memory, where programs store information when they are running. The bigger it is, the less time your computer will have to wait to get data from the hard disk drive.

Registry
A large, constantly changing file in Windows 95, containing details of how your computer is set up, and all the programs stored on the hard disk.

RFC
Request for Comments. Online documents that have to do with technical standards for the Internet.

Scandisk
A Windows utility that checks the integrity of data stored on a hard disk drive, identifies problems, and where possible puts them right.

Scanner
A machine that scans a printed image, such as a photograph or a page of text, and turns it into a file that can be displayed and manipulated on a computer.

SCSI
Small Computer System Interface [pronounced ‘Scuzzy’]. A high speed data interface that uses a card, which plugs into an ISA [integrated system architecture] socket on the computer motherboard. SCSI cards that use PCI slots are also available.

Search engine
An online service which can trawl through the contents of the Web (Websites, newsgroups, email addresses) looking for specific phrases or words. The engine asks you for keywords and then provides a list of web sites that contain your chosen words. Clicking on the listed web sites will take you to the relevant web page.

Sectors
Hard disk drives are split into tracks and sectors, which is a way for the computer to identify where particular files or pieces of data are stored.

SGML
Standard Generalised Markup Language – a meta-language that provides a comprehensive set of syntax rules for marking up the structure of documents and data. [HTML is a subset of SGML.]

Shareware
Software programs that you can try before you buy. If you decide to use a program, you should send a payment to the author or publisher.

Signature file
Return address information such as name, telephone number, and email address that users put at the bottom of email messages. Known as a ‘sig’.

SLIP or PPP
Serial Line Internet Protocol (SLIP) or Point to Point Protocol (PPP) Internet connections. Both allow a computer to connect to the Internet using a modem and telephone line. Users then navigate the Internet using software on their own computer. This is in contrast to using a Dialup Internet Connection, where a user is forced to navigate the Net using a text-based set of menus.

SOAP
Simple Object Access Protocol – which provides a way for applications to communicate with each other using XML.

Spam
Slang for posting the same message to multiple newsgroups – frowned on by most people on the Internet.

SQL
Structured Query Language – a standard language for talking to databases.

SSL
Secure Socket Layer – secures Web sites with encrypted traffic to and from the site user (see HTTPS).

Streaming
A technology for delivering audio or video files so that they can be heard or seen whilst downloading, without having to wait for the complete file.

Style sheet
A template or a file which defines the layout of a document or a series of documents.

Telnet
Allows users remote access to computers, most often at libraries, universities,
and government agencies.The remote computer thinks you are using its own keyboard.

Templates
A ready-prepared document layout. Many word-processors have simple pre-formed letterheads, fax headers, memos, and invoices. To customise them for your own needs, you simply change the sample text.

Text-based Internet account
The user must use Unix commands to navigate the Internet.

Unix
A computer operating system which allows multiple clients to access one host at the same time.

URL
Uniform Resource Locater. This is the (rather clumsy) name for the address of any resource on the Internet. You type the URL into your browser, and are taken to that address.

Usenet newsgroups
More than 17,000 topic-oriented message bases that can be read and posted to. Also called newsgroups.

UUencode
A means of translating binary data so that it can be sent as an ASCII file across the Internet. (You need a decoder to convert it back into its native format at the other end.

Virus
A special type of program which is designed for malicious purposes. It spreads by attaching itself to other programs and then carrying out unwanted and often damaging operations.

Veronica
A computer program that helps users find what they are looking for on gopher servers around the world. Instead of looking through menus, Veronica allows users to enter keywords to locate the gopher site that holds the information they want.

Virtual
A computer-generated environment.

VRML
Virtual Reality Modelling Language. This is a file format which allows you to create 3D graphics for the Internet.

WAIS
Wide Area Information Servers These servers allow users to conduct full-text keyword searches in documents, databases, and libraries connected to the Internet. Pronounced ‘Ways’.

Wizard
A self-activating program that guides you through a simple set-up routine for a particular feature or application.

World Wide Web
A revolutionary browsing system that allows point-and-click navigation of the Internet. The Web is a spiderweb-like interconnection of millions of pieces of information located on computers around the world. Web documents use hypertext, which incorporates text and graphical links to other documents and files on Internet-connected computers.

XML
Extensible Markup Language – a new standard for marking up documents and data. It is based on SGML, but with a reduced feature set that is more appropriate for distribution via the Web. XML allows authors to create customised tags not available in HTML.

XSL
Extensible Style Language – a system for controlling the presentation of XML documents and structured data.

Zipping
The process of compressing a file so it takes up less space. There are two types of Zip files, normal (which require a program to extract them) and self-executing that open up automatically. PKZip and WinZip are popular zipping and unzipping programs.

© Roy Johnson 2009


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Information Technology timeline

October 1, 2009 by Roy Johnson

milestones in IT development

1617. Scottish mathematician John Napier invents logarithms and constructs set of ‘rods’ or ‘bones’ for performing mechanical calculations.

1642. French mathematician and philosopher Blaise Pascal constructs and demonstrates a mechanical adding machine.

1666. German mathematician Gottfried Leibniz writes on the value of binary numbers in De Arte Combinatore.

1694. Leibniz constructs first mechanical device to successfully perform all four arithmetic functions (addition, subtraction, multiplication, and division).

1804. French engineer Joseph Jacquard develops punched card system for programming looms – weaving cloth to match a set of commands. Holes in the cards correspond to binary Open/Closed. This system of in-putting data into machines persists until 1960s

1823. English engineer Charles Babbage invents The Difference Engine – the first mechanical computer.

1834. Babbage designs and starts to build ‘Analytic Engine’ – Augusta Lovelace [Byron’s daughter] writes the first computer program.

1847. English mathematician George Boole publishes ‘Mathematical Analysis of Logic’ and uses the ideas of binary numbering to fuse logic with algebra.

1925. American engineer Vannevar Bush designs and builds the first multipurpose mechanical analogue computer.

1936. English mathematician Alan Turing puts together binary notation and Boolean logic to produce tests for mathematical probability. He proposes ‘Universal Turing Machine’ – a theoretical construct which contains all the logical and mathematical elements of what would be a modern analogue computer.

1940. American electrical engineer Claude Shannon uses Boolean logic to optimise relay-switching circuits in his MA thesis at MIT.

1945. Vannevar Bush publishes ‘As We May Think’ in Atlantic Monthly, outlining what we now call ‘hypertext’. Hungarian mathematician John van Neumann conceives the first stored computer program.

1948. First computer using stored program built at Manchester University. Turing’s proposal for a ‘Turing Computing Engine’.

1962. ‘Spacewar’ – first graphical computer game.

1968. Douglas Englebart demonstrates ‘windows’ and mouse in San Francisco.

1969. Myron Krueger develops first prototypes of virtual reality.

1974. Ted Nelson self-publishes Computer Lib and Dream Machines outlining his ideas on hypertext in paper form. Standard General Markup Language (SGML) first invented as a universal publishing language.

1975. Bill Gates and Paul Allen found Microsoft

1978. Philips and Sony introduce the laserdisk (analogue video)

1981. IBM introduces the first PC

1983. Microsoft launches its first version of Windows. Myron Krueger Artificial Reality

1984. Apple-Mac launched – DNS (Domain Naming System) introduced – Number of Internet hosts reaches 1,000

1985. Commodore Amiga launched (powerful graphics facility) – First Amstrad released in UK.

1987. Ted Nelson’s Literary Machines describes Project Xanadu – his scheme for electronic commerce and micro-payments. Hypercard (hypertext program) added to the Apple-Mac. Number of Internet hosts reaches 10,000

1989. Tim Berners-Lee develops Hypertext Markup Language (HTML) and the World Wide Web at CERN in Geneva. Howard Rheingold’s Tools for Thought. Number of Internet hosts reaches 100,000

1990. Archie (search tool) released by McGill University. Microsoft launches Windows 3.0

1991. CERN launches the World Wide Web. Howard Rheingold’s Virtual Reality – an early work on the sociology of computer users. Gopher (search tool) released by University of Minnesota.

1992. Veronica (search tool) released by University of Nevada. Number of Internet hosts reaches 1,000,000

1993. Marc Andreessen, NCSA, and University of Illinois develop Mosaic – the first graphical interface to the WWW. A recorded 341,634 per cent growth rate in Web traffic.

1994. First eCommerce (shopping malls and banks) arrive on the Web, and Web traffic second only to FTP-data transfers. Linux 1.0 open source operating system released.

1995. First search engines developed. Sun launches JAVA programming.

1996. Browser wars begin between Netscape and Microsoft. Web censorship in China, Saudi Arabia, Singapore, Germany, and New Zealand.

1998. Extensible Markup Language (XML) introduced. Dotcom boom takes off. Estimated size of Web – 320 million pages.

2000. Dotcom crash begins (April). Size of Web estimated at one billion pages.

2003. Google claims a searchable database of 3.6 billion web pages.

2005. Google claims a searchable database of 8.2 billion web pages.

2006. Google claims a searchable database of 25 billion web pages.

2008. Google claims a searchable database of 1.0 trillion (1,000,000,000,000) web pages.

© Roy Johnson 2009


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Instruction terms in essay questions

August 23, 2009 by Roy Johnson

sample from HTML program and PDF book

1. Instruction terms are words commonly used in essay questions. They instruct or direct you in the approach you should take towards the proposition of the question.

2. The exact meaning of these terms will vary depending upon the subject being studied. The following give some idea of what they normally mean for essays and examination questions.

3. Think carefully about the meaning of these terms in relation to the remainder of the question. Even though you might feel confident, do not become blasé or inattentive. Sometimes even experienced students forget the important difference between Compare and Contrast.

4. Try to understand exactly what an instruction is asking you to do – but be reasonable. Don’t look for problems where they might not exist. If in doubt, ask your tutor.


GLOSSARY

account for
Explain the reasons for, giving an indication of all relevant circumstances. Not to be confused with ‘Give an account of’ which asks only for a detailed description.

analyse
Study in depth, identifying and describing in detail the main characteristics.

argue
Put forward a proposition, then illustrate it, discuss its significance, and defend it against possible counter-charges.

assess
Examine closely, with a view to ‘weighing up’ a particular situation. Consider in a balanced way the strengths and weaknesses or points for and against a proposition. In conclusion, state your judgement clearly.

comment
State clearly and in moderate fashion your opinions on the material in question. Support your views with reference to suitable evidence or explanations.

compare
Look for similarities and differences between two or more things.

contrast
Deliberately single out and emphasise the differences and dissimilarities between two or more things.

criticise
Give your judgement about a statement or a body of work; explore its implications, discussing all the evidence which is available. Be specific in your examination.

define
Set down the precise meaning of something. Be prepared to state the limits of the definition. Take note of multiple meanings if they exist.

describe
Give a detailed and comprehensive account of something.

discuss
Investigate and examine by careful argument. Explore the implications and the advantages or disadvantages. Debate the case and possibly consider any alternatives. This is probably the most common instruction term. It is inviting you to say something interesting in response to the topic in question. You can choose your own approach.

evaluate
Make an appraisal of the worth of something in the light of its truth or utility. Emphasise the views of authorities as well as your personal estimation.

explain
Make plain. Account for. Clarify, interpret, and spell out the material you present, giving reasons for important features or developments.

how far …
Similar to questions which begin ‘To what extent…‘. You are expected to make your case or present your argument, whilst showing an awareness that alternate or even contradictory explanations may exist. Careful assessment and weighing of evidence are called for.

identify
Pick out what you regard as the key features of something, perhaps making clear the criteria you use in doing so.

illustrate
Make clear and explicit by the discussion of concrete examples.

justify
Show adequate grounds for decisions or conclusions. Answer or refute the main objections likely to be made against them.

outline
Give the main features or the general principles of a subject, omitting minor details and emphasising structure or arrangement.

relate
Show how things are connected, and how they possibly affect, cause, or resemble each other.

review
Make a survey of, examining the subject critically.

state
Present the main points in brief, clear form.

summarise
Give a concise account of the main points of a matter, omitting details and examples.

to what extent … Similar to questions which begin ‘How far …‘. This term is used in questions asking you to show your own judgement. It’s unlikely that there will be a black or white answer. You are expected to argue your case, offering evidence to support your view(s). It also gives you the opportunity to discuss both weaknesses and strengths for a case.

trace
Follow the development or history of a topic from some point of origin.

© Roy Johnson 2003

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Intellectual Property and Open Source

July 4, 2009 by Roy Johnson

a practical guide to protecting code

The Open Source movement makes software available free for people to use or even to pass on to others. This flies in the face of normal commercial practice, where people jealously guard their intellectual property rights. Traditional laws support these rights – so when new open source projects come into being, often as a result of work done collectively, it can be difficult to disentangle issues of ownership and control. This is equally true for the written word as well as for digital code.

Intellectual Property and Open SourceVan Lindberg’s new book is an amazingly thorough guide to the whole business. He explains the legal niceties without resorting to too much jargon, and supplies practical support materials in the form of sample licences and agreements. The first part of the book has eight chapters giving an introduction to intellectual property law, then the second part is six chapters offering an intellectual property handbook for developers, particularly those working in the field of open sources.

He warns that it’s a book of general principles, not specific advice, for the very good reason that cases of copyright, patents, and intellectual property rights are very case specific. Nevertheless, he does discuss lots of instructive individual cases, and I imagine that anybody with a need to know in this complex field of legislation will find what he has to say both instructive and chastening.

He explains the law on copyright, patents, and inventions by comparing it to computer programming, which it turns out to resemble remarkably closely. One new ruling (or code) is bolted on to that which already exists, and the whole statute grows by a process of accretion.

As a layman, it’s interesting to learn that you cannot patent an idea – no matter how original an invention it might be. You can only patent the proof that it can actually be realised and turned into something useful. And even the term ‘useful’ is coded – as his example of a patent dust cover for dogs illustrates. It can be used – even though the idea itself is quite barmy.

On Open Sources he explains that software is free as in ‘free speech’, not ‘free beer’ – but this distinction will mean little to everyday users who are happy to download a program that works well without having to pay for it.

The picture becomes clearer when he explains the success of various Open Source projects – FireFox, Linux, Apache – many of which have formed the basis for successful business ventures. The software itself is free to use and distribute, but companies have legitimately made money from offering services in support of its use.

He’s very good at explaining the complexities of rights developed whilst you are in somebody else’s employment. In brief, you’ve very little chance of succeeding, and he even includes some tragic cases of people who have lost lawsuits on works patented before and after they have been in somebody else’s employ. If there’s a barely-hidden message here, it’s ‘stay away from legal contests’.

As a rule, employees should assume that any intellectual output they produce whilst employed will be considered proprietary information and subject to the company’s proprietary information agreement (PIA). It doesn’t matter if the invention is in a completely different area of technology, or completely unconnected with your work; it still may be covered.

Even if you wish to make your work available free to the public, there are a number of different licenses to choose from, offering a sliding scale of ownership and control – such as public domain, open source, and reciprocal. The general advice he gives is not to attempt writing your own.

One thing is for certain. It’s potentially a very complex area both technically and legally. The law works on a basis of precedence, and you can bet that if a legal tangle emerges, it will be judged on similar occurrences in the past, even though your technology might be brand new.

All sorts of additional complications arise because of the special nature of software development. Does the author of a ‘patch] (a small-scale solution to a problem) have copyright over it when it is added to a big project? Can you combine two open source programs and claim copyright over the result? What about reverse engineering?

I would have welcomed a glossary and a webliography, but it’s to O’Reilly’s credit that they publish books like this – because although it might have a fairly limited readership, it raises lots of important issues and simultaneously makes available the information for dealing with them.

© Roy Johnson 2008

Intellectual Property and Open Source   Buy the book at Amazon UK

Intellectual Property and Open Source   Buy the book at Amazon US


Van Lindberg, Intellectual Property and Open Source, Sebastopol (CA): O’Reilly, 2008, pp, 371, ISBN: 0596517963


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Filed Under: e-Commerce, Media, Open Sources Tagged With: Copyright, e-Commerce, Intellectual property, IPR, Open Sources, Publishing

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