Oh,i have look the serial part example,I used the Keil uVision4,but i can\'t find the header file on my complier,
i guess the gutch() and the putch() is useful.The lcd display is work sucessfully ,and i tried to remove the max232, now the RS232 directly connect to 8051,and the lcd will display the unknow characters, So,is that the RFID can receive the request and the read data? I don\'t know why the LCD display the unknow characters.
Thanks