Computer power management system

摘要: A low power management system including both hardware (Figure 2) and software 5) is provided for a battery powered portable computer (not shown). The powers down various sections (10, 12, 16, 21, 24) of the (DMA, VCO, DISPLAY, UART) when they are not used. controlled by control program directing microprocessor (40) computer, includes capability to turn off clock signals shown) based upon demand. Also included on also press key keyboard. monitors application programs keyboard activity so as in response loop 16) looking keypress certain other loops which can be monitored without use microprocessor.