Control unit ( controller): Control unit is composed of program arithmometer, instruction register and operation controller, ect. 控制器:控制器是由程序计数器、指令寄存器和操作控制器等组成。
Control Principle and Emergency Troubleshooting of Pulsation Vacuum Steam Sterilizer Arithmometer 脉动真空蒸汽灭菌器计数器控制原理及应急维修
Use of Gate of Arithmometer in Measuring Width of Impulse 巧用定时计数器门控位测量脉冲宽度