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With the development of electronic technology and automatic technology, people have more and more high expectations for life quality. The home electric equipment products are in constant update too. From the transistor of the beginning of beginning, to the electron tube ; Imitated it to the figure; From the discrete component to the integrated circuit; From ordinary to high performance , multi-functional type; By manual to control to infrared ray remote control, to intelligent to develop. This one that designed less important is an infrared remote control curtain. It adopt minimum system , 89C2051 of MCU design , control one 220V reversible changing speed the motor control to draw back and shut off the curtain.[27]

Infrared focal point of remote control in infrared to send with receiving and code and decode the issue. So focal point that discuss the. A special-purpose one infrared to send and receive device very more, code and method that decode too a lot of nowadays, so will choose suitable sending, receiving the device, code, decoding method according to the real situation. In addition, should understand the application of the interface technology of the one-chip computer and one-chip computer anti-interference method. Interface respect introduces one cluster of mouths of the one-chip computer mainly. Anti-interference technology is as follows, order redundancy, interception technology, design, software, software of trap ¡°guard the gate dog \

Keywords: Remote control£¬ Infrared ray £¬Code £¬Anti-interference £¬Intelligence£¬Serial

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