I'm currently the sole programmer for a project. We are creating a handheld device that includes a screen to display live data and video feed, push buttons to control the program's functionalities, and some other electronic components. The user does not interact with the screen directly (operation is controlled through the push buttons, not a touch screen or keyboard/mouse), but the visuals on it are an essential part of using the device.
While not exactly the same, my device is similar in setup to an IR camera like this one, where there are buttons that do all the program control, and then a screen to display a variety of information essential to operating the device but that is not "clicked" directly. I'd like a name specifically for the part of the software that is displayed on the screen. I have thus far been calling this program a graphical user interface based on OmniSci's definition of a GUI:
a type of user interface through which users interact with electronic devices via visual indicator representations.
Is GUI the accurate term to describe that programme? I have a doubt bacause the user does not interact with the electronics through the graphical interface directly. But also, it's all one chunk of code that controls the screen display, the functionality of the push buttons, and all other electronic components, so maybe it is a GUI? I would appreciate some assistance putting a name to my program.