Computer Applications
Discuss two popular input devices.
Computer System
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Answer
Two popular input devices are:
Keyboard — Keyboard is a typewriter like device which is used to type in the letters, digits and commands. It contains a matrix of switches (one switch per key). Each key, when pressed, sends a digital code to the computer that determines which key has been pressed.
Mouse — The mouse is pointing device that points to a position on computer screen. Mouse controls movement of pointer on screen. When a mouse moves on a flat surface, the cursor on the screen also moves in the direction of mouse's movement. A mouse generally has two or three buttons and it may or may not have a wheel.
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