Saturday 19 December 2015

AT&T Unix PC (1985)



AT&T Unix PC - Image Credit
Launched 1985

Thirty years ago, things were beginning to develop quite quickly in the microcomputer marketplace. The Apple Macintosh was a year old, Microsoft released Windows 1.0 and both the Atari ST and Commodore Amiga were gaining fans too.

The Mac, Windows, ST and Amiga all represented a leap forward in usability over earlier generations. But despite their pretty interfaces, they were still pretty basic in terms of raw power compared to Unix, the operating system of choice for many businesses and academic institutions.

By 1985, Unix had been around for a decade and a half. Developed by AT&T Bell Labs (now part of Alcatel-Lucent), Unix could run on a variety of larger computers (and with a wide variety of variants) but typically a Unix user would be timesharing on a box run by somebody else, using a dumb terminal.

In academic circles and large corporations, Unix was starting to become the dominant operating system of choice. However, the growth of Unix was under threat from low-cost and simple computers that people could stick on their desk and do with what they liked.

In order to compete in this new world, AT&T commissioned a company called Convergent (now part of Unisys) to develop a personal computer capable of running Unix. What they designed was innovative and elegant... but also slow, noisy and rather expensive. The AT&T Unix PC was born.

Based on a 10HMz Motorola 68010 CPU (pretty similar to the processor in the Mac) with 512MB of RAM as standard, the AT&T Unix PC also typically came with a 10MB or 20MB hard disk and a 348 x 720 pixel resolution monochrome monitor. You could share your Unix PC with other users hooked up via terminals, and it also supported Ethernet and dial-up networking. Also, the Unix PC had its own optional graphical user environment which could be used with a three-button mouse.

Starting at over $5000 for a basic model, the Unix PC was roughly competitive with IBM’s PC AT which was much less capable, but rather more popular. In the end, the AT&T Unix PC was not a success, despite all its high-end capabilities.

Unix never actually became popular on desktop or laptop computers, with Windows having about a 90% market share. However thirty years on it turns out that Unix and Unix-derived systems such as Linux, Android and iOS have the lion’s share of the smartphone, tablet, web server and supercomputer markets.

The AT&T Unix PC is a very rare device today and seems to be highly sought-after by collectors.

Further reading:
You can see the Unix PC in action in the videos below:



Thursday 10 December 2015

AltaVista (1995)

Launched December 1995

It’s difficult to imagine now, but once upon a time finding stuff on the web was *hard*.  In the early 1990s, the number of web sites grew from 623 at the end of 1993 to a quarter of a million in mid-1996.. but there was no reliable way to search for information on all those thousands of websites all at once.

In early 1994, the web directory Yahoo! was founded which attempted to catalogue the web by category. If you wanted to research a topic, you would have to drill down through Yahoo!’s categories in much the same way as using a library.

In mid-1994 the world’s first “full text” search engine was launched, called WebCrawler. But it only indexed a small part of the rapidly growing web, and the results were extremely hit-and-miss.

But in December 1995 the first recognisably modern search engine was launched. Predating Google by several years, Digital’s AltaVista service made the first real attempt to index a large part of the ever-growing web, and made a good effort to sort search results in a way that was meaningful to users. Originally the site was hosted at altavista.digital.com, only moving to altavista.com in 1998.
 The effect was dramatic. It no longer took hours to find a piece of information on the web, but instead AltaVista could give the answer in a few seconds (usually) and the result you were looking for was usually on the first page.. or first few pages. AltaVista had some pretty advanced search functions which allowed users to tailor their results further.


The effect was dramatic. It no longer took hours to find a piece of information on the web, but instead AltaVista could give the answer in a few seconds (usually) and the result you were looking for was usually on the first page.. or first few pages. AltaVista had some pretty advanced search functions which allowed users to tailor their results further.

As is the case today, AltaVista made it easy to find obscure or precise bits of information, but was less good when it came to general topics. This meant that most users would use a combination of AltaVista and Yahoo! when researching topics.


Built in part to showcase Digital’s Alpha-based processors,  AltaVista temporarily transformed the stuffy old Digital Equipment Corporation into a major player.. for a short time.

But AltaVista had a significant flaw. The search engine results were initially based almost entirely on “on-page” factors (such as the title, headings and word density of a page) which meant that the the search engine could be easily manipulated, leading to a rise in search engine spam. When rivals Google came to market they used a fundamentally different approach which leaned heavily on “off-page” factors such as PageRank.

AltaVista grew quickly and in 1999 the majority was sold to an investment firm which valued the site at over $2.7 billion. A combination of the collapse of the Dot-Com Boom and the rise of Google severely dented AltaVista and after being passed around various owners it shut down completely in 2011.

For a generation of early internet  users, AltaVista transformed the way they used the web. Without doubt it helped to make the early web accessible and contributed to its phenomenal growth in the late 1990s. But sadly in the post-Google world, AltaVista has largely been forgotten as the great pioneer it once was,.