C51下实现的音乐程序，用定时中断和建立音乐节拍库实现.编制音乐代码, 可看这代码.频率常数即音乐术语中的音调,而节拍常数即音乐术语中的多少拍 -C51 under the music program, regularly interrupted music rhythms and the establishment of the Implementation. Music establishment code, take a look at this code. Constant frequency that the terminology of the music tones, rhythms and music that is constant terms of the number of shoot