What is touch screens
A type of display screens that has a touch-sensitive transparent panel covering the screen. Instead of using a pointing device such as a mouse or light pen , you can use your finger to point directly to objects on the screen.
Why is computer screen so big
The size of elements on the screen are controlled by the computer's desktop resolution.This is why computer screens are so big.
when was the screen computer invented
A window screen, also known as insect screen or bug screen is designed to cover the opening of a window. The mesh is usually made of metal wire,fiberglass, or other fiber and stretched in a frame of wood or metal. It serves to keep leaves, debris, insects, birds, and other animals from entering a building or a screened structure such as a porch, without blocking fresh air-flow