UFC718AE01 HIEE300936R0001 控制器 要增加一条机器指令

ABB  UFC718AE01 HIEE300936R0001  控制器

UFC718AE01 HIEE300936R0001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、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 。 UFC718AE01 HIEE300936R0001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；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。

Uf718ae01hiee300936r001 controller (English name: controller) refers to changing the wiring of the main circuit or control
circuit and changing the circuit in a predetermined order.The resistance value is used to control the starting, speed regulation,
braking and reversing of the motor. It consists of a program counter, an instruction register, an instruction decoder, a time
sequence generator and an operation controller.Composition, which is the "decision-making body" for issuing orders, that is,
to coordinate and direct the operation of the whole computer system. There are two kinds of controllers: combinational logic
controller and microprogram controller.Each controller has its advantages and disadvantages. Uf718ae01hiee300936r001
combinational logic controller is troublesome in design and complex in structure. Once the design is completed, it can't be
repaired.Or expand, but it's fast. Microprogrammed controllers are easy to design, simple in structure, and easy to modify or
expand. To modify the function of a machine instruction, only the corresponding one needs to be reprogrammed.Microprogram;
To add a machine instruction, just add a microprogram in the control memory, but it is by executing a microprogram.
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