The top 10 products of the past 40 years

Very few truly transformed IT, says Frank Hayes

Forty years. Thousands of IT products. Many of them made a huge difference for technology professionals, and they’re fondly remembered. But only a few truly transformed IT — and how IT people, users and businesses did their work. Here are 10 IT products from the past 40 years that changed everything:

• IBM’s System/370: In 1964, with its System/360 mainframe, IBM promised that customers wouldn’t have to rewrite their software when they bought the next version of the machine — it would be compatible. That was a revolutionary concept. In 1971, the S/370 kept that promise and, in the process, sealed the doom of IBM’s mainframe competitors. Of course, that never-have-to-rewrite compatibility also created the Y2k problem.

• Ethernet: It bubbled up out of Xerox’s Palo Alto Research Centre, became a standard in 1980 and soon overran proprietary protocols to become the overwhelmingly dominant networking connection for PCs and servers.

• The IBM Personal Computer: In 1981, the PC transformed the desktop computer from something users smuggled in (the Apple II running VisiCalc) to a corporate IT standard. It also gave users control over their computing that they would never give up.

• The Apple Macintosh: In 1984, the Mac transformed users’ expectations of how friendly computers should be. The result: mice, graphical interfaces, plug-and-play peripherals and a knockoff from Microsoft called Windows.

• SAP R/3: Remember when data processing departments built their own financial accounting software? Starting in 1992, SAP wiped out the need to maintain all that code — and it was Y2k-compliant, too.

• Software as a service proved out. If SAP offered “buy instead of build”, in 1999 offered “rent”.

• Linux: And if is “rent”, Linux is “get it free”. More important, since first appearing in 1991, Linux has shown that major pieces of IT infrastructure can be developed by large groups of loosely organised programmers.

• Netscape Navigator: It wasn’t the first popular web browser — that was NCSA Mosaic. But when Mosaic creator Marc Andreessen added cookies in 1994, Netscape turned the web into a worldwide marketplace.

• Dynamic RAM: IBM invented it, but Intel sold the first commercial DRAM in 1970. Within two years, it was outselling the magnetic core memory that had been the standard since the 1950s. And unlike core memory, DRAM was subject to Moore’s Law: Over time, it just got cheaper and more plentiful.

• The BlackBerry: The cellphone meant users could always be connected, but starting in 1999 with Research In Motion’s BlackBerry, users would always be connected to their email — and the era of the 24/7 knowledge worker truly arrived.

This column was written as part of the celebration of the 40th anniversary of Computerworld US

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