SUPPLY VOLTAGE DETECTING SYSTEM FOR PORTABLE INFORMATION PROCESSOR

摘要

PURPOSE:To provide a portable information processor which can deal with plural interchangeable printers of different load currents through the use of a simple detection circuit and a control method in the supply voltage detecting system of the portable information processor driven by a battery. CONSTITUTION:This supply voltage detecting system is constituted of the battery 6 for driving one of the printers 5a to 5c connected to a device main body, a voltage detecting part 7 for detecting the voltage drop of the battery 6 caused at the time of starting printing, and a CPU 3 which inputs this detection signal and executes various kinds of control and so on.