04218876 is referenced by 17 patents and cites 8 patents.

A combined timekeeper and calculator implemented on an LSI semiconductor chip includes a generator stage for generating basic clock signals and system clock signals which are obtainable by modifying the basic clock signals, and a processor stage responsive to the supply of the system clock signals for performing the operations required for the timekeeper mode and calculator mode. The basic clock signals also are modified to create second signals useful in the timekeeper mode. The generator to supply the processor unit with the system clock signals while the second signal is being generated. Upon completing the operations by the processor unit, a clock control circuit prevents the processor unit from being supplied with the system clock signals.

Title
Combined timekeeper and calculator with low power consumption features
Application Number
5/854214
Publication Number
4218876
Application Date
November 23, 1977
Publication Date
August 26, 1980
Inventor
Toshio Nishimura
Kyoto
JP
Hirohide Nakagawa
Sakurai
JP
Shintarou Hashimoto
Shiki
JP
Agent
Birch Stewart Kolasch & Birch
Assignee
Sharp Kabushiki Kaisha
JP
IPC
G04C 23/00
G06F 1/00
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