介绍一种运用PIC16F84单片机实现与PC机串行通信的方法，并给出其硬件接口电路及通信源程序。包含单片机和PC端的程序。

An RS232 port controls a TSA5512 via a PIC16F84 This allows a TV tuner to be scanned across its full range. 4MHz crystal for the PIC, the tuner has it s own internal crystal. Use a MAX232 for level shifting. SCL RB6 SDA RB5 Din RA1 Dout