Busicom
Busicom (Nippon Calculating Machine Corp następnie zmieniona na Business Computer Corporation) – japońska firma produkująca sprzęt biurowy w latach 60. i 70. XX wieku.
Wsławiła się tym, że zleciła firmie Intel opracowanie układu scalonego – procesora i4004 dla swego kalkulatora, który nosił oznaczenie Busicom 141-PF. Firma przestała istnieć w 1974 roku.
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The UniCom 141P printing calculator sold for $695 when introduced in 1972. It was built by Busicom Corp of Japan (formerly Nippon Calculating Machine). The calculator was initially sold as the Busicom 141-PF and then was sold by UniCom and National Cash Register.
The integrated circuits used in the calculator were a result of a joint development effort by Busicom and Intel. Intel offered the chip set as the MCS-4 microcomputer system in November 1971. It included the Intel 4004 4-bit CPU, one of the earliest microprocessors.
This description is from an advertisement in the July 1972 issue of The Office - Magazine of Management, Equipment, Automation.
- "Performs chain calculations with or without printing of the intermediate answers. Has two accumulators plus a powerful working register. Lets you flip-flop amounts between registers when multiplying or dividing. Has two complete decimal systems -full floating or floating in/fixed out. Works percentages without decimal indexing. Prints three lines a second, identifies every item, and shows negative answers in red. Performs automatic duplex functions. Weighs just 11 pounds and takes up only a little more desk space than a letterhead."
- UniCom, 10670 North Tantau Avenue, Cupertino, California 95014
On the left, the NEC TK 80 kit, based on Intel 8080 chip, on the centre, Busicom calculator motherboard, based on Intel 4004 chip, and on the right, the Busicom calculator, fully assembled in Ueno, Tokyo.