Maximization of Shelf Life for a Battery-Powered Computer
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
A battery-powered computer requires that memory contents in both the main memory and display buffer be retained when the computer is not in use (powered off). The Real Time Clock must also continue to function in this state. This requires some of the logic components of the computer to stay powered on, even when the system itself is off. The battery drain required to support these functions is reduced to a minimum by using three techniques. These are component selection, power system control, and proper interfacing to the powered-on devices for minimum power drain. The components remaining powered on when the computer is off are the main memory, display buffer memory, power supply control logic and the Real Time Clock.