Description: Computer and computer or computer data transfer between the terminal can use a serial communications and parallel communications in two ways. Since the serial communication line with the use of small, low cost, especially in the long-distance transmission, the number of lines characteristic avoids inconsistencies which are widely used. In serial communications, require communicating parties have adopted a standard interface that allows different devices can be easily connected together for communication.
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有关RS232和RS485接口的问答.doc
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