Power transmission controller for electronic calculators

Details Power transmission controller for electronic calculators Power transmission controller for electronic calculators

1979-09-12

1981-08-18

Malzahn, David H.

Boots, shoes, and leggings

364900, G06F 100, G06F 314

Patent

active

042850436

ABSTRACT:
Disclosed is a power transmission controller for an electronic calculator which controls power transmission to a computation circuit and a display device included within the electronic calculator. The power transmission controller indicates a forthcoming termination of the power transmission at a first stage in unison with a first control signal derived from a timer circuit through said display device. Then the power transmission controller terminates said power transmission at the second stage in accordance with a second control signal derived from the timer circuit. A clear key for conducting a clear operation functions to initiate the power transmission to said computation circuit and said display device.

REFERENCES:
patent: 3428793 (1969-02-01), Scuitto
patent: 3643219 (1972-02-01), Heimann
patent: 3855577 (1974-12-01), Vandierendonck
patent: 3922526 (1975-11-01), Cochran
patent: 3938138 (1976-02-01), Kojima et al.
patent: 3941989 (1976-03-01), McLaughlin et al.
patent: 3955185 (1976-05-01), Nishimura
patent: 4125871 (1978-11-01), Martin

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