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cho minh hoi loi~ nay` khi su dung phan mem cua ban
??? Error using ==> serial.fopen at 72
Port: COM1 is not available. No ports are available.
Use INSTRFIND to determine if other instrument objects are
connected to the requested device.
Error in ==> RS232_Communication>button_Connect_Callback at
264
fopen(s);
Error in ==> gui_mainfcn at 96
feval(varargin{:});
Error in ==> RS232_Communication at 46
gui_mainfcn(gui_State, varargin{:});
??? Error while evaluating uicontrol Callback
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