Hi,

I am looking for a LCD type touchscreen. this touchscreen would be about 10 inches. What I want to design on this touchscreen is a virtual keyboard that is custom designed with certain keys not on the standard QWERTY keyboard.

I know there are lots of touchscreens out there that allow design of the layout. However, I need to OUTPUT these key strokes via a USB port that will go to ... WHAT ?

I need this to run on a tablet PC which already has the virtual keyboard. How do I make the keystrokes output via the USB, and be understandable to the controller. The controller is a simple computer. This simple computer is a CNC mill.

So, what I am trying to do is remove the exisiting keyboard that is broke. There is not a replacement available any longer. I did not like the keyboard anyway from a layout standpoint. So, I want to take a tablet PC and attach it to the 4 wire input of this CNC mill so I can have a virtual keyboard on my PC tablet.

I would think there is a API that can handle the virtual keyboard output to USB, but what do I need to attach to the USB to get a 4 wire signal? Maybe a USB > Serial port adapter? I have 3 of those today already. IOGear is the best on i have used so far.

Any ideas on this please...