PIC16F877A RTC1307 LCD 16x2 keypad 4x4 and a windows application connect with PIC on RS232

利用PIC16F877A编写的测试程序，其中包括II总线，LCD，串口等外围端口，可以直接拿来使用-Use PIC16F877A written test procedures, including II bus, LCD, serial port and other peripherals can be directly brought to use