蜂鸣器是一种一体化结构的电子讯响器，本文介绍如何用单片机驱动蜂鸣器，他广泛应用于计算机、打印机、复印机、报警器、电话机等电子产品中作发声器件。-Buzzer electronic Xiangqi an integrated structure, this article describes how to use the microcontroller drive the buzzer, he is widely used in computers, printers, copiers, alarms, telephones and other electronic products for sound generating device.