I plan to develop a POS system from scratch, which will be based on windows (currently XP SP3). I tried to get an overview of which API to use to work with POS devices. So far I found OPOS which is...

I am trying to print Chinese characters on an Epson TM-T88IV M (parallel port) using the Microsoft Point of Service SDK in C#. However, they appear as questions marks on the printer. (?) My PosPri...

For some interop with a legacy POS application, I was wondering if it was possible to implement a phony OPOS device in C#. Basically I would implement a phony keyboard that took web requests and p...

I am struggling to get an Epson "ESC/POS" printer to print barcodes (Using Delphi) and want to test if the printer is not faulty. Do you know where I can find a program to print a barcode in "ESC/P...