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4003, 10-bit shift register. 4004, 4-bit central processing unit (CPU) (the microprocessor) with a maximum clock speed of 750 kHz. Complete 4004 chip-sets were sent to Busicom early in 1971 and by March Shima had built a working 141-PF calculator.
- Busicom 141-Pf
The development for this calculator of the Intel 4004...
- Rockwell 920
See also the Busicom 141-PF which uses the early Intel 4004...
- Busicom Le-120A "Handy"
Busicom LE-120A "HANDY-LE" Distinctive features: The first...
- Busicom and Broughtons
Busicom LE-120A "HANDY", the first truly pocket-sized...
- Old Notes and Notices
Commodore Calculator Transistor Radio . Below are photos of...
- Sperry Remington Rand Calcs
By 1976, Sperry was out of the calculator business to focus...
- Busicom 141-Pf
- Nippon Calculating Machine Corporation, Ltd
- Broughtons of Bristol
- External Links
History
The Nippon Calculating Machine Corp was incorporated in 1945 and changed its name in 1967 to Business Computer Corporation, Busicom. 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. They made the first calculator with a microprocessor for their top of the line machinesand they were th...
Microprocessor
In order to limit production cost, Busicom wanted to design a calculator engine that would be based on a few integrated circuits (ICs), containing some ROMs and shift registers and that could be adapted to a broad range of calculators by just changing the ROM IC chips. Busicom's engineers came up with a design that required 12 ICs. In April 1968, engineer Masatoshi Shima was tasked with designing a special-purpose LSI chipset, along with his supervisor Tadashi Tanba, for use in the Busicom 14...
Broughtons of Bristol is a company selling and maintaining a broad line of business machines. They used to buy most of their equipment from Busicom and bought their trade name when they went bankrupt in 1974.
Jan 29, 2018 · Hoff and Stanley Mazor, also of Intel, and with help from Busicom’s Masatoshi Shima, came up with the architecture for the MCS-4 4-bit chipset which consisted of four chips: 4001: 2048-bit ROM...
Feb 14, 2023 · Fi will send any veterinarian, shelter, rescue, or breeder a starter pack of 20 chips completely free! Fi offers several ways for rescues to earn more free microchips. You can earn one free chip for every chip you register. You can receive a whole box of free chips for referring a new Fi customer.
CPU clock rate. The Intel 4004 is a 4-bit central processing unit (CPU) released by Intel Corporation in 1971. Sold for US$60 (equivalent to $450 in 2023 [2]), it was the first commercially produced microprocessor, [3] and the first in a long line of Intel CPUs. The 4004 was the first significant example of large-scale integration, showcasing ...
In order to limit production cost, Busicom wanted to design a calculator engine that would be based on a few integrated circuits (ICs), containing some ROMs and shift registers and that could be adapted to a broad range of calculators by just changing the ROM IC chips.
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