ALR121-S00 YOKOGAWA 串行通信模块 横河

ALR121-S00 YOKOGAWA 串行通信模块 横河

控制单元，英文Control Unit(CU)，是CPU部件之一，有时也安装与CPU外部。其基本功能是从内存取指令、分析指令和执行指令。

控制单元是实现一种或多种控制规律的控制仪表或控制部件。如:多路传输控制单元、代理设置控制单元。

无论哪一个种类的控制单元，原理均为通过控制单元发出的控制信号对CPU各个部分加以控制。控制单元大体可以分为以下两类。微程序式，由微程序读取和发出控制信号。通过被称为微型定序器的简单数字通路（微型电脑）对微程序加以执行。硬件型控制单元。由数字通路直接发出控制信号。由于集成电路的规模化及设计技术的进步，此种控制单元已成为可能。

A Control Unit, or CU, is one of the CPU components, sometimes attached to the CPU. Its basic function is to access instructions from inside, analyze instructions and execute instructions.

A control unit is a control instrument or control component that realizes one or more control laws. For example, multiple transmission control unit and proxy setting control unit.

No matter what kind of control unit, the principle is to control each part of the CPU through the control signal issued by the control unit. Control units can be broadly divided into the following two categories. Microprogram type, which reads and sends control signals by microprogram. The microprogram is executed through a simple digital path called a microsequencer (microcomputer). Hardware type control unit. The control signal is sent directly by the digital path. Due to the scale of integrated circuits and the progress of design technology, this kind of control unit has become possible.