最流行的mifare卡读卡器函数声明及其使用，对于大家有很好的提示作用-The most popular mifare card reader function declarations and their use, the U.S. has prompted a good role

Wiegand（韦根）协议是由摩托罗拉公司制定的一种通讯协议，它适用于涉及门禁控制系统的读卡器和卡 片的许多特性-Wiegand (Wiegand) protocol is a communications protocol developed by Motorola, which applies to many of the features of the card reader and card access control system

SD读卡器AU6331主控电路原理图及资料驱动.rar-SD card reader AU6331 control circuit schematics and data-driven. Rar