单片机对rs232串口读写,接收传来的ascii码，并且将码解析成可以显示的bcd码，根据命令发送存储器或接口的代码，转换成ascii码送出rs232串口。-Rs232 serial port to read and write single-chip, to receive from the ascii code, and code analysis into bcd code that can be displayed, in accordance with an order to send the code memory or interface, to convert ascii code serial rs232 out.