微程序设计技术是实现微处理器指令系统的重要技术，微程序控制方法相对于硬布线控制方法可以简化控制部件的设计。
Microgramming is an important method to design the instruction act of a microprocessor, microprogrammed control can simplify the design of control unit over hardwired control.
本文阐述了它的基本思想，并通过在VAX-11/780上运行仿真微程序的实例，说明模块结构微程序设计的方法。
This paper describes its basic principles. The modular microprogramming is introduced with an example of the emulation microprogram that has been run on the VAX-11/780 computer.
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