Electronic device for reducing the power consumption during the

Details Electronic device for reducing the power consumption during the Electronic device for reducing the power consumption during the

1989-03-14

1991-03-12

Shaw, Dale M.

Boots, shoes, and leggings

G06F 100

Patent

active

049997947

ABSTRACT:
A small-sized electronic device is provided with a key board and an LCD display unit outside the body and incorporating a CPU including a clock circuit for measuring a time and a RAM for storing the data; a battery for supplying the body with electric power; a backup power source for supplying the body with the electric power when removing the battery from the body; and a change-over circuit for selecting either the battery or the backup power source inside the body. A clock circuit is arranged so that when a stop indication of the clock circuit is input from the key board, the CPU stops the operation of the clock circuit and if the backup power source is selected, the backup electric power is supplied to the RAM. Accordingly, the backup time for storage contents is extended.

REFERENCES:
patent: 4317180 (1982-02-01), Lies
patent: 4317181 (1982-02-01), Teza et al.
patent: 4381552 (1983-04-01), Nocilini et al.
patent: 4780843 (1988-10-01), Tietjen
patent: 4851987 (1989-07-01), Day

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