Busicom

Japanese calculator manufacturer known for commissioning Intel to develop the 4004 microprocessor.

Last updated August 25, 2026

Overview

Busicom was a Japanese calculator manufacturer that commissioned Intel to develop a microprocessor in the 1970s, leading to the Intel 4004. The company had some influence in the calculator market but later declined.

Products and positioning

Flagship businesses

Busicom 141-PF

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