Abstract
Because the solar cell has more and more application, its quality testing is particularly important in the production, and a new LED solar cell testing system is presented. Based on the total design of the system, the hardware and software of the RS232 serial communication module is designed. This paper introduces two parts of the module which are the circuit of the serial communication and serial communication software programming; and describes the realization of serial communication between PC and MCU by using VB. The computer and MCU are connected by RS232. The result shows that the communication between PC and MCU and user interface are realized.
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