There will either be a remote or just buttons on the display itself. You can select the source of what’s being displayed from a USB drive or SD card, that’s how it’s displaying the current image. Some of them have built-in casting options like chromecast.
If it doesn’t have something built it, it will have HDMI in, which makes a chromecast, roku, firestick, or even just a PC a quick option.
Some of them are more like a giant, non-touch-screen tablets than monitors.
This probably just has this image saved into memory, and they can easily make it display something else.
Easily?
Yes.
There will either be a remote or just buttons on the display itself. You can select the source of what’s being displayed from a USB drive or SD card, that’s how it’s displaying the current image. Some of them have built-in casting options like chromecast.
If it doesn’t have something built it, it will have HDMI in, which makes a chromecast, roku, firestick, or even just a PC a quick option.
Is the image burning into the screen not a concern on these though?
This displays often are not static, often displaying short video ads for seasonal items which take up the whole monitor.
Probably less than the burn-in of a taskbar or window header
Reminds me of our old typing PC with the WordPerfect header and footer burned into the orange phosphor
That colour had a smell, like a library.