有关STC89C51RC／RD+系列内部EEPROM使用的C源程序,包括单字节读，写，扇区寻址读，写。使用KEIL C51编写。-the internal EEPROM STC89C51RC/RD series of C source code, including single-byte read, and write sector addressing reading and writing. Use KEIL C51 prepar