6、 由于电子音乐门铃具有悦耳动听,价格低廉,耗电少等优点,在现代家居中的应用越来越流行。有了电子音乐门铃,在有客人拜访时,听到的将不再是单调的提示音,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, l
7、ow price and low power consumption advantages of modern household more and more popular.With electronic music doorbell, where guests visit, the hearing will no longer be monotonous tone, but the extraordinary pop melodies.Sound effects such as personal
8、ized electronic music.Here a single chip design with electronic music doorbell, just AT89C51 microcomputer system, together with a small LM386 audio amplifier to do the output to the speaker.Visitor, click the button, doorbell will play