Description: VB-based PC and SCM serial communication with the computer technology, especially the single-chip microcomputer technology the development, it has been increasingly used to SCM for some industrial control systems such as temperature, flow and pressure parameters detection and control. PC with a powerful monitoring and management capabilities, and SCM has a rapid and flexible control characteristics, PC through the RS-232 serial interface with external communications equipment, many control systems are commonly used in a communications solutions. So how PC and communication between the microcontroller is a very important practical significance. This paper will describe the environment in VB PC and microcontroller serial communication between the hardware and software programs. PC communicat
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