Abstract: A computer with automatic power cut-off function comprises a BIOS portion including a system power cut-off service routine for generating the power cut-off command to write it; a microprocessor including an advanced power management portion for generating the power cut-off control signal; and a power control portion for cutting the power source to the system based on the power cut-off control signal, thereby performing the power cut-off by itself without a waiting time taken in storing data and information at a system memory during the power cutting off of the operating system.

Abstract: A system and process of properly controlling the charging and discharging a smart battery of an electronic equipment even if data information of the smart battery is not exact.

Abstract: A computer system having two fixed disk drives and with a different operating system stored in each disk drive, in which selective booting and suspend/resume operation of the power management can be preformed through the two fixed disk drives. The computer system comprises a first hard disk drive storing a first operating system and a second hard disk drive storing a second operating system, each of the first and second hard disk drive has a reserved data storage area for the suspend operation. A port exchanger intervenes in the master and slave integrated drive electronics (IDE) interface signal lines leading from an integrated drive electronics (IDE) controller to the first and second hard disk drives, in response to a bus exchange control signal fed from a system controller to pass or cross switch the integrated drive electronics (IDE) interface signal paths directed to the first and second hard disk drives.