电子电路按功能可分为数字电路和模拟电路两大类。数字电路是以“开”和“关”两种状态或者以高、低电平来对应“1”和“0”二进制数字量,并进行数字和运算(又称逻辑运算)、存储、传输及转换的一种电子电路。数字电路中的工作信号(即输入信号和输出信号)称为数字信号,是一种在时间上和数值上都是离散的信号。这种数字信号的变化在时间上是不连续的,总是发生在一系列离散的瞬间,信号的数值大小和增 Electronic circuits by function can be divided into two categories of digital circuits and analog circuits. Digital circuits are “on” and “off” two states or high and low corresponding to “1” and “0” binary digital and digital and computing (also known as logical operations), storage, transmission and An electronic circuit that converts. Working signals in digital circuits (ie, input and output signals) are called digital signals and are signals that are discrete in time and numerically. This change in digital signal is not continuous in time, always occurs in a series of discrete moments, the signal value of the size and increase