Masatoshi Shima, Date of Birth, Place of Birth

Masatoshi Shima

Japanese computer pioneer

Date of Birth: 22-Aug-1943

Place of Birth: Shizuoka, Shizuoka Prefecture, Japan

Profession: engineer, computer scientist, chemist, university teacher

Nationality: Japan

Zodiac Sign: Leo

Masatoshi Shima (? ??, Shima Masatoshi, born August 22, 1943, Shizuoka) is a Japanese electronics engineer.
He was one of the architects of the world's first microprocessor, the Intel 4004.
Working for Busicom in Japan, in 1968 he 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 3- chip Busicom proposal into a single-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 later joined Intel in 1972.
There, he worked with Faggin to develop the Intel 8080, released in 1974.
Shima then developed a number of Intel peripheral chips, some used in the IBM PC, such as the 8259 interrupt controller, 8255 parallel port chip, 8253 timer chip, 8257 DMA chip and 8251 serial communication USART chip.
He then joined Zilog, where he worked with Faggin to develop the Zilog Z80 (1976) and Z8000 (1979).