How to make a monochrome display-like style in Photoshop?
For example, like the following image:
I am curious how to make part that is monochromatic and looks like a display.
Okay, here's what I did, and the sample is below. I will presume in some places you know how to use Photoshop. If not, just ask!
To get that retro display effect I suggest to recreate some "scanlines" tutorial like this one:
To make everything a consistent tone of green I suggest you put a "gradient map" adjustment layer on top of all your layers and select a custom gradient that goes from black to green. The scanlines should be just below the gradient map and above everything else you have on your display.