COMPUTER PERIPHERAL DEVICE AND IMAGE REPRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent a defect in operation in the case of battery-over state during the battery operation of computer peripheral equipment connected to a portable information processor. SOLUTION: In the figure, 16 is a battery reset monitor circuit and 17 is a resistance for detecting the charging and discharging currents of a battery 13. A submicrocontroller 10 when detecting (battery residual capacity)<=(battery residual capacity lower limit) according to battery residual capacity data obtained from the monitor circuit 16 gives a battery residual capacity warning message to a main microcontroller 7 through an SM bus.