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 time and date. The VB code may be modified to suit the protocol you are using with your display hardware.-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 time and date.　The VB code may be modified to suit the protocol you are using with your display hardware.