这个程序是四通道的串口通信代码，点击通信开始时，自动从指定串口接收并显示数据，可实现串口的切换-This procedure is four-channel serial communication code, click on the beginning of communication, automatic from the specified serial port receive and display data, enabling the switch serial

Foreign Exchange Currency display. A simple VB program with GUI to send serial data over com port or TCP data to any hardware display with LEDs to show the currency exchange data. The hardware we built looks very much like the screen including the ti

matlab GUI tutorial with code