Initial value setting system for electronic device

Details Initial value setting system for electronic device Initial value setting system for electronic device

1987-11-24

1990-02-06

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Identifying or correcting improper counter operation

377 39, H03K 2140

Patent

active

048993530

ABSTRACT:
An initial value setting system for an electronic device having system clearing means for generating a trigger pulse in response to power source voltage fluctuation, counter means for counting intervals between the trigger pulses generated successively by the system clearing means, and initial value setting means for undergoing an initialize operation of the electronic device in response to the counter means. In accordance with the present invention, an erroneous execution of all-clear due to electrostatic disturbance noise can be prevented by counting interval or number of the trigger pulses, and discreminating whether or not the initial value setting means should be operated.

REFERENCES:
patent: 4080589 (1978-03-01), Kline
patent: 4363123 (1982-12-01), Grover
patent: 4468796 (1984-08-01), Suga
patent: 4669098 (1987-05-01), Boatwright

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