红外接收器，使用延时实现红外遥控接收，里面含有相关例程。-Infrared receiver, using delay the realization of infrared remote control receiver, which contains routines.

AT89C51单片机nRF2401A驱动程序,SPI操作部分延时时间在11.0592MHz晶振下测试通过,等待发送时间根据与数据传输速率、数据宽度等参数相关,请参照器件文档.-AT89C51 the microcontroller nRF2401A driver SPI operation part of the delay time in the test 11.0592MHz crystal, waiting for a transmission time according to the