What makes a Touch Screen, a Touch Screen?

[Mike Lynch]

I have an HP 800 G1 AIO.
The Mother Board has an Adapter for a Graphics Card.
I have found a Touch Screen Graphics Card for the Adapter.
Besides installing the physical Touch Screen Graphics Card AND the Drivers, Does the PC need a special Monitor Screen?
I'm hoping not but I'm not conversant what causes a Touch Screen PC to function.
Any feedback will be appreciated.

Mike Lynch

 

[SIW2]

According to tinternet it was sold in both versions, touch or no touch. I dont think you can retrofit a touchscreen.

 

[file3456]

The screen would have to support something called "capacitive touch." What kind of GPU is that which apparently is "touch screen capable?" That wouldn't be the case.

If you're wanting to use more than one screen this might be of interest. Read all of it! windows 7 - How can I set up a touchscreen as the non-primary monitor in a dual monitor situation? - Super User





- - - Updated - - -

I see now, your GPU is "touch screen capable" because it more than likely has USB input to sense the touch screen events.

You could get any touch screen and just plug it into the HDMI or Displayport and your computer's free USB port. The touch screen needs a USB port to sense the touches and the HDMI or Displayport for video.


In any case, the screen STILL has to support touch screen capability. Again, USB is needed to sense the touch events.

 

[MisterEd]

Today displays with a touchscreen are manufactured with it integrated into it.

Capacitive touchscreens uses electrical properties of the human body as an electrical conductor to identify the touch point. Normally you touch the screen with your finger to use the touchscreen

Resistive touchscreens are pressure-activated. Normally you touch the screen with a special pen to use the touchscreen.

Most phones and laptops have a capacitive touchscreen. However, some have resistive touchscreens because the pens give more precise positioning. These are useful if the screen is used for drawing.

An example of a phone with a resistive touchscreen is the Samsung Note series of phones. Naturally they include a pen.

I was given an old laptop that no longer worked. It is a Toshiba Tecra M7-S7331 that originally had Windows XP Media Center. I repaired the computer and upgraded it to Windows 7 and then to Windows 10. It has a resistive touchscreen. It has a slot in the right side to store its pen. A picture of the pen is shown below:



Back in 1998 I put together custom computers systems that required touchscreen monitors. I ordered kits that were used to modify a standard monitor to give it a touchscreen. We initially modified CRT monitors but later switched to LCD monitors. I think I remember that the kits were about $1200. The kits required a cable to be plugged into the computer. Some plugged into serial ports while others plugged into a USB port. Note these kits provided were of the capacitive type.