Masatoshi Shima

Masatoshi Shima (born 1943) is a Japanese electrical engineer and computer architect. He was a key member of the team that developed the Intel 4004, the world's first commercially available microprocessor. Shima's contributions to microprocessor design have been instrumental in shaping the field of computer architecture and advancing the capabilities of modern computing devices.

Designed the Intel 4004, the first commercial microprocessor,as well as the Intel 8080, Zilog Z80 and Zilog Z8000 microprocessors, and the Intel 8259, 8255, 8253, 8257 and 8251 chips.

Masatoshi Shima is a Japanese electronics engineer. He was one of the architects of the world's first microprocessor, the Intel 4004. In 1968, Shima worked for Busicom in Japan, and did the logic design for a specialized CPU to be translated into three-chip custom chips. In 1969, he worked with Intel's Ted Hoff and Stanley Mazor to reduce the three-chip Busicom proposal into a one-chip architecture. In 1970, that architecture was transformed into a silicon chip, the Intel 4004, by Federico Faggin, with Shima's assistance in logic design.

• He was one of the architects of the world's first microprocessor, the Intel 4004.