Historical Document · 1985

US Patent 4,516,862: Electronic Timepiece Having Address Designation Circuits of ROM and RAM (Daini Seikosha)

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A watch microprocessor: 32 kHz crystal, clocks to 4 kHz, about 240 µs machine cycle, 128 × 4-bit RAM; priority 4 June 1982.

Author

Yosuke Yoshida

Year

1985

Type

Historical Document

Credit

US Patent and Trademark Office; via Google Patents.

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