提出一种基于 AT89C51 的学习型红外遥控器的设计方案，该设计的控制器，可存放十六个遥控代码，采用九键分四区域控制，每一区域对应 一种家庭电器的四种主要功能。（附带pcb原理图及源程序等）(This paper presents a design scheme of learning infrared remote controller based on AT89C51. The controller can store 16 remote control codes and adopt nine keys and four regions to control. Each region corresponds to four main functions of a household appliance. (with PCB schematic diagram and source program, etc.))