51实现TCPIP协议原理图，可以参考一下-51 TCPIP achieve agreement schematics, a reference

NRF24L01的开发文档、原理图以及51、avr、pic等系列单片机的测试程序。-NRF24L01 developer documentation, schematics, and 51, avr, pic microcontroller series of test procedures.

采用matlab实现对无线网络中，AODV协议栈的仿真 。采用随机动态建图的过程，生动的解释了协议原理- 51/5000 Using matlab to achieve on the wireless network, AODV protocol stack simulation . Using the process of random dynamic mapping, the principle of protocol is explained vividly