控制单元的设计 重点

控制单元设计 (Design of Control Unit)

Control unit generates timing and control signals for the operations of the computer. The control unit communicates with ALU and main memory. It also controls the transmission between processor, memory and the various peripherals. It also instructs the ALU which operation has to be performed on data.

控制单元产生用于计算机操作的定时和控制信号。 控制单元与ALU和主存储器通信。 它还控制处理器，内存和各种外围设备之间的传输。 它还指示ALU必须对数据执行哪些操作。

Control unit can be designed by two methods which are given below:

可以通过以下两种方法设计控制单元：

硬线控制单元 (Hardwired Control Unit)

It is implemented with the help of gates, flip flops, decoders etc. in the hardware. The inputs to control unit are the instruction register, flags, timing signals etc. This organization can be very complicated if we have to make the control unit large.

它是在硬件中借助门，触发器，解码器等来实现的。 控制单元的输入是指令寄存器，标志，定时信号等。如果必须将控制单元做大，这种组织可能会非常复杂。

If the design has to be modified or changed, all the combinational circuits have to be modified which is a very difficult task.

如果必须修改或更改设计，则必须修改所有组合电路，这是非常困难的任务。

微程序控制单元 (Microprogrammed Control Unit)

It is implemented by using programming approach. A sequence of micro operations is carried out by executing a program consisting of micro-instructions. In this organization any modifications or changes can be done by updating the micro program in the control memory by the programmer.

它是通过使用编程方法来实现的。 通过执行由微指令组成的程序来执行一系列微操作。 在这种组织中，程序员可以通过更新控制存储器中的微程序来进行任何修改或更改。

硬接线控制和微程序控制之间的区别 (Difference between Hardwired Control and Microprogrammed Control)

翻译自: https://www.studytonight.com/computer-architecture/design-of-control-unit

控制单元的设计 重点