VB serial tracing point drawing program, the program is very small, only a few k, there VB6.0 can recompile the source code, run the test pattern as shown in screenshot. Part of the source code annotated: Select com1 MSComm1.CommPort = 1 Set the baud rate to 9.6kpbs, no parity, 8 data bits, 1 stop bit MSComm1.Settings = "9600, N, 8,1" Read all of the input buffer Case comEvReceive The code here can be accepted when the serial buffer has handled RThreshold characters

VB 串口程序描点画图\COM.frm
...................\COM.frx
...................\COM.vbp
...................\COM.vbw
VB 串口程序描点画图

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