Portable data collecting and processing apparatus

Claim 1

A portable data collecting and processing apparatus having at least one battery therein, comprising: keyboard means for selectively entering data and commands into the apparatus, said keyboard means having a plurality of keys; input control means coupled with said keyboard means for coding the data and commands entered into said keyboard means and outputting a signal corresponding to the coded data or commands and a start signal; information processing means coupled with said input control means for processing the signal provided by said input control means and outputting a processed signal, said information processing means having an operation mode and a stop mode and outputting an operation signal during the operation mode; display means coupled to said information processing means for displaying information corresponding to the processed signal from said information processing means; voltage control means coupled with said input control means and said information processing means, said voltage control means receiving said start signal from said input control means and said operation signal from said information processing means, and outputting a booster control signal; and power supply means including a booster circuit for boosting a voltage of said at least one battery, said power supply means being coupled with said voltage control means and said battery for selecting either a voltage obtained by boosting the battery voltage or said battery voltage in accordance with said booster control signal from said voltage control means and supplying the selected voltage to said input control means, said information processing means, and said voltage control means.