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1. spectrum.ieee.org › ted-hoffHow Ted Hoff Invented the First Microprocessor - IEEE Spectrum

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   Feb 1, 1994 · Busicom’s managers chose Hoff’s approach, partly, Hoff said, because they understood that the chip could have varied applications beyond that of a calculator. The project was given the ...

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2. en.wikipedia.org › wiki › Intel_4004Intel 4004 - Wikipedia

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   Hoff and Mazor quickly came up with solutions to the Busicom concerns. To address the complexity of the subroutines, originally solved in Busicom's design using one-byte macroinstructions and complex decoder circuitry, Mazor developed a 20-byte long interpreter that executed the same macroinstructions.

3. www.pcmag.com › news › how-the-4004-changed-the-worldThe Microprocessor at 50: How the 4004 Changed The World

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   Nov 15, 2021 · A 4-bit binary logic chip, the 4004 was designed as an alternative to a series of more specific chips that used a decimal architecture by a team that included Busicom's Masatoshi Shima,...

   • Author: Michael J. Miller

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4. www.intel.com › content › wwwAnnouncing a New Era of Integrated Electronics

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   At A Glance. 1971. Intel’s 4004 microprocessor began as a contract project for Japanese calculator company Busicom. Intel repurchased the rights to the 4004 from Busicom for a fraction of the device’s eventual value.

5. en.wikipedia.org › wiki › BusicomBusicom - Wikipedia

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   Busicom's management agreed to Hoff's new approach [ 9 ] and the chips' implementation was led by Federico Faggin who had previously developed the Silicon Gate Technology at Fairchild Semiconductor.

6. spectrum.ieee.org › chip-hall-of-fame-intel-4004Chip Hall of Fame: Intel 4004 Microprocessor - IEEE Spectrum

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   Jul 2, 2018 · An agreement was made in February 1970, with Busicom planning its calculator rollout on the basis of Hoff’s and Mazor’s schedule.

7. People also ask

   Why did Hoff and Mazor choose Busicom?

   • In October 1969, Hoff, Mazor, and the three Japanese engineers met with Busicom management, visiting from Japan, and described their divergent approaches. Busicom’s managers chose Hoff’s approach, partly, Hoff said, because they understood that the chip could have varied applications beyond that of a calculator.

   How Ted Hoff Invented the First Microprocessor - IEEE Spectrum

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   Why did Busicom develop a new calculator?

   • Busicom was interested and Shima returned to Japan to prototype software for the new calculator to make sure the MCS-4 architecture would support Busicom’s needs. An agreement was made in February 1970, with Busicom planning its calculator rollout on the basis of Hoff’s and Mazor’s schedule.

   Chip Hall of Fame: Intel 4004 Microprocessor - IEEE Spectrum

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   How did Busicom get a job?

   • Busicom had hired Intel to develop a set of custom chips for a low-cost calculator and had sent three engineers to Santa Clara to work on the chip designs. Hoff was assigned to look after them, getting them pencils and paper, showing them where the lunchroom was—nothing technical.

   How Ted Hoff Invented the First Microprocessor - IEEE Spectrum

   spectrum.ieee.org/ted-hoff

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   Why were Hoff and Mazor not a chip designer?

   • The problem was that Hoff and Mazor were not chip designers—those people who can take specifications and create detailed logic-gate diagrams. Those diagrams, in turn, are used to work out exactly how and where transistors and other components are to be patterned on the physical chip.

   Chip Hall of Fame: Intel 4004 Microprocessor - IEEE Spectrum

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   Why did Busicom fail?

   • Due to a recession in Japan in 1974, Busicom became the first major Japanese company in the calculator industry to fail. Originally, they made Odhner type mechanical calculators and then moved on to electronic calculators always using state of the art designs.

   Busicom - Wikipedia

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   Why did Intel choose Busicom?

   • Intel considered itself a memory chip company at the time, but it had been operative less than two years and accepted the Busicom contract rather than forgo a business development opportunity. However, when Intel engineer Ted Hoff began work on the project, he quickly realized that Busicom’s design concept was too cumbersome to operate properly.

   Announcing a New Era of Integrated Electronics

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8. archive.computerhistory.org › resources › accessTed Hoff and Stan Mazor on their contributions to the Intel 4004

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   Japanese calculator manufacturer Busicom into a more flexible general purpose solution using fewer expensive packages. He hired Stan Mazor from Fairchild to help configure the architecture around a 4-bit CPU (the 4004). They describe the process of developing the logic