用数字信号完成对数字量进行算术运算和逻辑运算的电路称为数字电路，或数字系统。由于它具有逻辑运算和逻辑处理功能，所以又称数字逻辑电路。现代的数字电路由半导体工艺制成的若干数字集成器件构造而成。逻辑门是数字逻辑电路的基本单元。存储器是用来存储二值数据的数字电路。从整体上看，数字电路可以分为组合逻辑电路和时序逻辑电路两大类。-Complete with digital signal to carry on to the digital quantity arithmetic and logical operations circuit called digital circuit, or digital system. Because it has the logic operation and logical processing functions, say again so digital logic circuit. The modern digital circuit made by the semiconductor process some digital integrated device structure and into. Logic gate is the basic unit of the digital logic circuit. Memory is used to store binary data of digital circuit. Look from whole, digital circuit can be divided into the assembly logic circuit and temporal logic circuit two kinds big.