This is called screen capture, and the image of the screen is known as a screenshot.
Moreover, often when we are using computers, we need to save things that are showing on the screen. They are our TV, audio system, gaming console, and office device, all combined into one. However, modern technology has upgraded these devices such that they are far more than just calculation devices. Back in the days when computers were invented, they were large, and only computational work was possible through them. Computers and smart devices have been an important part of our lives since their invention.
