| 摘要 |
A method and device which powerswitches a display monitor through the reset of a microcomputer is adapted to interrupt the latch up caused during the use of a soft power key by reading the power state of the display monitor before latch up from a memory, and switching the power state to the state before the latch up of the display monitor. The device includes: a soft power key section for generating a reset signal; an EPROM for storing data concerning the power on/off state of the display monitor before the operation of the soft power key section; a microcomputer for generating a power-off signal with the use of the soft power key section and, if a latch up occurs during the use of the soft power key section, reading the power on/off state data stored in the EPROM and switching the power state of the display monitor to the state before the latch up; and a power supply circuit section controlled according to the presence of the power-off signal generated by the microcomputer, and switching the output of a DC voltage.
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