无线收发程序，用avr单片机控制24l01芯片

ISO18000-4标准文档，对RFID开发人员很有帮助-ISO18000-4 standard document, the developer of RFID helpful

Low frequency NXP hitag2 encryption cipher This the low frequency NXP hitag2 encryption cipher. The package hitag2.zip contains the following files: hitag2.png - Cipher overview hitag2.c - Source-code-Low frequency NXP hitag2 encryption cipher This the low frequency NXP hitag2 encryption cipher. The package hitag2.zip contains the following files: hitag2.png- Cipher overview hitag2.c- Source-code

说明：  RFID读写器，可对RFID标签进行读写，实时获取RFID信息(RFID reader can read and write RFID tags and obtain RFID information in real)

ACR122U Sample Codes_C 读卡机示范代码(ACR122U Sample Codes_C )

ISO18000-7标准文档，对RfID开发人员有帮助-ISO18000-7 standard document, the developer of RFID has helped

T5557是兼容e555x的RFID芯片，但又具备和e555x系列芯片不同的新性能。文章着重介绍了T5557的新特点及工作原理，并对其RSK工作模式下读写器的电路设计作了分析，最后给出了D类功放和FSK解调的应用电路。-T5557 is compatible e555x the RFID chip, but with different chips and e555x series of new features. T5557 article highlights the new features and working principle and its mode RSK reader an analysis of the circuit design, and finally give the Class D amplifier and the FSK demodulator circuit applications.

无线收发芯片2401，可以实现无线收发功能，具体功能见程序。-wireless transceiver chip 2401, can achieve a wireless transceiver functions, see specific functional procedures.

利用 RSSI值对几何估算区域进行划分，运用改进公式计算出新的未知节点位置。(The geometric estimation area is divided by RSSI value, and the new unknown node position is calculated by the improved formula)

自己写的，毕设之类的可以借用。小玩意

通过串口通讯制取RFID卡的制卡程序，所用的环境是.NET2.0(Through the serial communication system for RFID card access system card procedures, the environment is used. NET2.0)