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It’s the 40th anniversary of the Intel 4004 tomorrow

World’s first commercially available microprocessor
Mon Nov 14 2011, 15:38

CHIPMAKER Intel will celebrate the 40th anniversary of the 4004, the world's first commercially available microprocessor, tomorrow.

The Intel 4004 shattered what people thought of computers, and it signaled Intel's shift away from manufacturing memory and into what was going to become the industry that changed the world forever.

Like the birth of many revolutionary pieces of engineering, the 4004 was designed by a bunch of engineers working into the night on the promise of creating something completely different.

It might sound bashful, but Intel's 4004 wasn't particularly powerful, and the firm admitted, "The 4004 was not very powerful." It was primarily used to perform simple mathematical operations in a calculator called Busicom.

Intel's 4004 had 2,300 MOS transistors and was fabricated at a 10,000nm process node on 60mm wafers. In a graphic illustration of Moore's law, processors from Intel and AMD today typically have hundreds of millions of transistors and are fabricated at the 32nm process node on 300mm wafers.

But the numbers don't tell the whole story. The fact is that the 4004 was not just a new chip with a new micro-architecture, but it was a radical new way of thinking and building processors.

Check back tomorrow for The INQUIRER's full Intel 4004 anniversary analysis. µ

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Comments
No, Busicom did indeed buy it.

Sorry, but Lawrence D'Oliveiro's comment isn't true at all. Busicom did buy the 4004, using it in their calculators as planned--for example, the Busicom 141-PF. Intel was able to offer the 4004 to other markets after renegotiating their deal with Busicom; the calculator maker had previously enjoyed exclusive rights to the Intel chips.

However, Busicom and other calculator makers did quickly abandon general-purpose microprocessors in favor of specialized calculator chips, so Intel's decision to seek other markets was a shrewd one.

posted by : Colin Howell, 15 November 2011 Complain about this comment
Busicom Never Bought It

Intel designed the chip with the hope of selling it to the calculator company, but they changed their minds and went elsewhere.

So Intel was left with a chip and no market. So they had to create one.

And the rest, as they say, is history.

posted by : Lawrence D'Oliveiro, 15 November 2011 Complain about this comment
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