1（基础）编写程序，通过DAC0832输出方波，初始频率为2KHz,频率可以通过按键“0”与“1”进行步进调节，按一下“0”键频率增加100Hz，按一些“1”键频率降低100Hz。

2（提高）编写程序，通过DAC0832输出锯齿波，初始频率为100Hz.

-Parallel 8 DA (voltage output) experiment, a (basic) programming, through DAC0832 output square wave, the initial frequency of 2KHz, the frequency with　1　step adjustment by pressing the　0 , press the　0　key increased frequency of 100Hz, according to some of the　1　key to reduce the frequency of 100Hz.

2 (increase) to program, through DAC0832 output sawtooth, the initial frequency of 100Hz.