Masatoshi Shima
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The Intel 4004
A testimonial from Federico Faggin, its designer, on the first microprocessor's thirtieth birthday
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Busicom
The 4000 Family
Masatoshi Shima
Masatoshi Shima was the engineer responsible for the Busicom calculator design. He came from Japan a few days after Faggin joined Intel, to check the logic design of the chip set. He was dismayed and very angry to see that Hoff's proposal had not progressed from his last visit, six months before, against Intel's promises. He stayed on and helped Faggin with the detailed logic design to partially recover the delay in the schedule agreed upon six months before. Besides Shima, the other members of the 4000 family design team were one electronic technician, and three draftsmen, of which only one knew how to layout silicon gate devices.