stc89c5a16s2单片机的ad模数转换，使用扫描法，可同时转换8路模拟信号-stc89c5a16s2 ad microcontroller analog-digital conversion, using the scanning method, which can convert 8 analog signals

并行DA和AD转换，能够成功实现其功能。已在FPGA开发板上验证。实现较高的数据转换精度。-Parallel DA and AD conversion, to successfully achieve its function. FPGA development board has been verified. Achieve higher precision data conversion.