Computer with alarm sounding apparatus having selectable output

Details Computer with alarm sounding apparatus having selectable output Computer with alarm sounding apparatus having selectable output

1994-08-15

1995-09-05

Harrell, Robert B.

Boots, shoes, and leggings

395180, 395186, G06F 1130

Patent

active

054487480

ABSTRACT:
When a drop of the voltage of a battery is detected, a detector outputs two kinds of alarm signals in accordance with the degree of voltage drop. Two PALs for generating an alarm signal input the respective alarm signals to a selector. An alarm signal from another PAL which generates an alarm signal in accordance with the state of a panel switch and a sound signal from a speaker data generator which generates various sound signals in accordance with a signal from a CPU are also supplied to the selector. The selector selects one from these signals so as to drive a speaker. Since a means for generating an alarm signal is provided separately from the speaker data generator, an alarm sounding operation is ensured.

REFERENCES:
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patent: 4660027 (1987-04-01), Davis
patent: 4667289 (1987-05-01), Yoshida
patent: 4686514 (1987-08-01), Liptak, Jr. et al.
patent: 4984185 (1991-01-01), Saito
patent: 5057779 (1991-10-01), Mittel
patent: 5076260 (1991-12-01), Komatsu
patent: 5136246 (1992-08-01), Sakamoto
patent: 5163151 (1992-11-01), Bronikowski et al.
patent: 5230055 (1993-07-01), Katz et al.
"Battery-Monitoring Device for Computer Systems", IBM Technical Disclosure Bulletin, vol. 34, No. 1, Jun. 1991, pp. 190-192.

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