> I nearly finish my program for POS which involve an ejection of cash drawer when is pressed. There are two ways in which the cash machine is connected to the computer: > 1. directly connected to computer printer port through a interface box.(I do not know whether a driver is needed or not.) > 2. connected to a printer which is in turn connected to the printer port of the computer. (both printing a receipt or not printing require the ejection of drawer)
You could use the MSCOMM32 control to send the specified character through the serial port (if you are using the serial port connection).
