ADPCM 解码源程序，用于播放ADPCM语音输出，使用凌阳 SPLX0 系列单片机，只使用了一个定时器。采样率可以调节，很好的程序。-ADPCM codec source for the broadcast ADPCM voice output, the use of Sunplus SPLX0 series microcontroller, only use a timer. Sampling rate can be adjusted, very good procedures.

会议计时器，以MCS51单片机为核心，实现会议演讲定时提醒功能，可以进行设定时间，倒计时，暂停，蜂鸣器提醒或灯光提醒等功能-Session timer to MCS51 single-chip microcomputer as the core, the realization of the meeting from time to time to remind the function of speech, you can set time, the countdown, suspension

本例采用自动方式即定时器A溢出执行ADC转换，通过A/D将MIC_IN输入的语音信号转换为数字信号，再通过D/A的两个通道AUD1和AUD2播放。-The use of automated means in this case that the implementation of the timer A overflow ADC conversion, through the A/D input to the speech signal MIC_IN converted to digital s