说明：  在KEILC下实现STC12C5412AD的三通道A/D转换程序，并用串口显示，软硬件结合，调试通过，程序稳定，请放心使用，并多提意见。由于本人以前用的是汇编开发，现刚改为C，所以可能程序不是很地道。
(KEILC under STC12C5412AD in the three-channel A/D conversion process, and serial shows that combination of hardware and software, debugging is passed, program stability, Please be assured that the use of, and opinions. Because I used to use the compilation of development, now has just changed to C, so the procedure may not be authentic.)