Abstract
Because of its advantages of small size, light weight, powerful etc., the single chip microcomputer(sometimes called “SCM”, ”microcontroller”, or ”MCU”) has a very wide range of applications in information appliances, instruments and meter, industrial control, medical apparatus and communication systems. The serial port is one of the most important resources in the microcontroller and has a very important role in the embedded application system. Some application skills of the serial port in experimental teaching and development of embedded products are discussed in this paper, such as the serial port application in program debugging during experiment teaching, multiple serial port expansion technology and implementation method of USB interface during development of embedded application system.
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