CMOS battery discharge warning device using computer's BIOS call

摘要

The present invention relates to a CMOS battery discharge warning device using a BIOS call of a computer, the CMOS memory (1) for storing information about the computer; A battery (2) for supplying a voltage to the CMOS memory (1); And a voltage comparator 3 for measuring a voltage of the battery 2 and outputting a control signal for outputting a warning message when the voltage is less than or equal to a predetermined voltage. The present invention relates to a CMOS battery discharge warning device using a computer BIOS call which, when performed, performs a CMOS battery low test and turns low, when the battery is low.