4、而是不同凡响的流行音乐旋律。特效音等个性化的电子音乐。这里用一个单片机设计的电子音乐门铃,仅需AT89C51单片机最小系统,再加上LM386做音频小功放,输出到扬声器。客人来访时,按一下按钮,门铃就会奏出优美的电子音乐。Abstract:As the bell has a wonderful blend of electronic music, low price and low power consumption advantages of modern household more and more po
5、pular.With electronic music doorbell, where guests visit, the hearing will no longer be monotonous tone, but the extraordinary pop melodies.Sound effects such as personalized electronic music.Here a single chip design with electronic music doorbell, just AT
6、89C51 microcomputer system, together with a small LM386 audio amplifier to do the output to the speaker.Visitor, click the button, doorbell will play the beautiful electronic music.17目录第一章设计原理及组成61.1设计原理61.2电子音乐门铃的组成61.3功率放大电路7第二章系统主要硬件介绍82.1AT89C52芯片简介82.1