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WESTINGHOUSE 1C31157G02 控制器 1C31150G01
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WESTINGHOUSE 1C31157G02 控制器 1C31150G01 控制器(英文名称:controller)是指按照预定顺序改变主电路或控制电路的接线和改变 电路 中电阻值来控制电动机的启动、调速、制动和反向的主令装置。 由程序计数器、指令寄存器、指令译码器、1C31157G02时序产生器和操作控制器组成,它是发布命令的“决策机构”,即完成协调和指挥整个计算机系统的操作。 控制器分组合逻辑控制器和 微程序控制器 ,两种控制器各有 长处 和 短处 。 1C31157G02组合逻辑控制器 设计 麻烦,结构复杂,一旦设计完成,就不能再修改或扩充,但它的速度快。 微程序控制器设计方便,结构简单,修改或扩充都方便,修改一条 机器指令 的功能,只需重编所对应的微程序;1C31157G02要增加一条机器指令,只需在控制 存储器 中增加一段微程序,但是,它是通过执行一段微程。 Controller (English name: Controller) refers to the main command device that changes the wiring of the main circuit or control circuit and the resistance value in the circuit in a predetermined order to control the start, speed regulation, braking and reverse of the motor. It is composed of program counter, instruction register, instruction decoder, 1C31157G02 timing generator and operation controller. It is the “decision-making body” that issues commands, that is, coordinates and directs the operation of the whole computer system. The controller is divided into combinational logic controller and microprogram controller, each of which has its own advantages and disadvantages. 1C31157G02 combinational logic controller is troublesome in design and complex in structure. Once the design is completed, it can’t be modified or expanded, but its speed is fast. The microprogram controller is easy to design, simple in structure, and convenient to modify or expand. To modify the function of a machine instruction, only the corresponding microprogram needs to be reprogrammed; 1C31157G02 To add a machine instruction, just add a microprogram in the control memory, but it is by executing a microprogram. |