说明：  用C51单片机测试模块,应用ADS1110转换芯片,扩展两片8255,32路AD通道,16k路DO,16路DI,正弦信号发生,RS232接口,(0~100MHz频率测试等功能),非常实用!
(test with C51 microcontroller module, application ADS1110 conversion chip, the two 8255 expansion. AD 32 Road Corridor, 16k road DO, DI Road 16, sinusoidal signal, RS232 interface, (0 ~ 100MHz frequency of testing, and other functions), very useful!)