POWER-ON PASSWORD FUNCTIONS FOR COMPUTER SYSTEM

摘要

POWER-ON PASSWORD FUNCTIONS FOR COMPUTER SYSTEM A power-on password security function for a digital computer system allows the system software to distinguish between authorized and unauthorized users. Safeguards are made against corruption of password data which could lead to lock-out authorized users, and redundant checks allow the security function to operate even when first-level checks fail. The battery-powered RAM storage area used to hold the password when the system is turned "off" is protected against being accessible by unauthorized users when the system is turned "on".