综合实验，数字录音机。试验目的：了解数字录音技术的基本原理。连接电路，MIC输入接ADC0809通道IN2，DAC0832输出接扬声器。编程以每秒钟5000次的速率采集IN2输入的语音数据并存入内存，共采集60000个数据（录12秒），然后再以同样的速率将数据送DAC0832使扬声器放音。-Comprehensive Experiment, digital tape recorders. Test Objective: To understand the digital recording technology, the basic principles. Connecting circuits, MIC input channel ADC0809 then IN2, DAC0832 output next speaker. Programming to 5000 times per second in2 the rate of collection of data and voice input into memory, a total of 60,000 data acquisition (recorded in 12 seconds) and then the same rate of data sent to enable DAC0832 speaker playback.