说明：  无线遥控小车的c代码。发射单元模块的单片机根据的按键信息发射相应的控制信号，经PT2262编码发射后，由PT2272接收，接收模块的单片机根据接收到的信息，控制小车前进、后退、左转、右转等操作。
(Wireless remote control car the c code. Single-chip transmitter module in the key information according to the corresponding control signal transmitter, encoded by the launch PT2262, PT2272 received by the receiving module of the microcontroller according to the received information, control the car forward, backward, turn left, turn right and other operations.)