Input Devices

The input devices of a computer can be of may types viz keyboard, mouse, webcam, microphone etc. The keyboard is the main input peripheral used by all computers. It  allows for user input and interaction with the computer. Like your conventional typewriters, the keyboard has all the letters of the alphabet, numeric keys from 0 - 9 and additional special keys.

Computer mouse is a navigational input for users who want an alternative for keyboard. Invented by Douglas Englebart in 1963, it was first widely used in the Apple Lisa computers. The evolution of mouse technologies have led to several variants of mices like the mechanical mouse, optical mouse, optical-mechanical mouse. The latter one is the most commonly used one in all computers and Macintosh and is much more accurate than the mechanical mouse. More recent varieties include the Trackball, Touchpad, and Joysticks.

Webcam is a camera connected to a PC or server allowing the users to share pictures or videos across the internet. Below is an example of how a webcam looks:

A microphone allows you to record sounds and voices to your personal or office computer. The sound card back plate is used to connect the microphone component to the computer. These days integrated microphones come in all laptops and certain desktop models.