本文重点介绍了利用单片机AT89C51和AT89C2051实现红外发射和接收电路的设计方法。发射电路采用单片机89C2051将待发送的二进制信号编码调制为40KHz的脉冲信号通过红外发射管发射红外信号。红外接收端采用一体化红外接收头HS0038接收红外接收信号。-This article focuses on the use of SCM AT89C51 AT89C2051 achieve infrared transmitter and receiver circuit design. Transmitter circuit uses the binary signal to be transmitted by the MCU 89C2051 coded modulation to a pulse signal with 40KHz tube emits an infrared signal via infrared transmitter. The infrared receiving end integrated infrared receiver the HS0038 to receive infrared receiver signals.