1.前言数字计算机的主要部分是构成运算、控制、存储各部件以及部分输入输出装置的各种基本电路。这些电路具有如下三方面的功能: i)能对信息进行“与”、“或”、“非”等逻辑操作; (ii)能对信号进行整形和放大 (定时整形); (iii)能暂存信息。具有这些功能的电路的最小单元称为基本电路~*。基本电路的种类很多,往往各台机器采用的不同。基本电路与其计算机的特性密切相关。基本电路选择的优与劣,将影响着计算机的可靠性。因此采用 1. INTRODUCTION The main part of a digital computer is the basic circuitry that forms part of the operation, control, storage and part of the input and output devices. These circuits have the following three functions: i) Logical operations such as AND, AND, or NOT on information; (ii) Shaping and amplifying signals (timing shaping); (iii) Temporary Save information. The smallest unit of a circuit that has these functions is called basic circuit ~ *. Many types of basic circuits, often different from each machine. The basic circuit is closely related to the characteristics of its computer. The advantages and disadvantages of the basic circuit selection will affect the reliability of the computer. Therefore adopted