Security System for Personal Computers
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
A technique is described whereby a password security system is built into a personal computer to limit access to the computer at power-on time or if security is desired while power is on. The system is operational only if the proper keyboard security code is entered. It is an improvement over prior concepts which used physical lock and key arrangements to provide the security needed. A diskette program is supplied with every personal computer (PC) so as to enable the user to install a password into non-volatile random-access memory (RAM). A program on the diskette is used to initiate the password code from the keyboard by the user. Once established, the code must be entered by the user during power-up time. During power-up time, the password code is also stored in the keyboard controller's RAM.