本程序是一个读卡程序，符合14443A协议。通过串口进行通信，主控芯片为89C52，射频芯片为RS632.可以对任何TYPEA型卡进行读取。-This program is a reader program, in line with 14443A protocol. Via serial communication, a master chip 89C52, RF chips for RS632. TYPEA can be of any type of card reader.