串口通信(Serial Communication)， 是指外设和计算机间，通过数据信号线 、地线、控制线等，按位进行传输数据的一种通讯方式。这种通信方式使用的数据线少，在远距离通信中可以节约通信成本，但其传输速度比并行传输低。-Serial Communication (Serial Communication), between peripherals and computer means, through the data signal lines, ground, control lines, bit by bit a means of communication to transfer data. This form of communication to use less data lines, in long-distance communications can save the cost of communication, but the transmission speed is lower than parallel transmission.