能在微程序的控制下自动产生各种单元模块的控制信号，实现加减法指令的功能。在本模型机综合设计之一——加减法指令的实现。实验中，计算机的数据通道、CPU从内存中取出机器指令，解释、执行指令都将由微指令组成的时序来完成，即一条机器指令对应一个微程序。-In microprogramming automatically generated under the control of various modules of the control signal to achieve the functions of addition and subtraction instructions. In this model, one machine integrated design- the realization of addition and subtraction instructions. Experiment, the computer s data path, CPU removed from memory machine instructions, interpretation, execution will be composed of sequential microinstruction to complete, that is, a machine instruction corresponding to a micro-program.