. "For this purpose, the notebook type personal computer comprises: a host power management unit (host PM unit) for performing time control for an on/off operation of an EL inverter, power supply to the FDD, power supply to the HDD, a printer-off operation, power supply to devices except for the RAM and VRAM, CLOCK control of the CPU and the like, and power supply control procedures in a suspend/resu" . . . .