Mouse
A mouse is used as a pointer on your PC
monitor. It enables you to control what happens on the screen by moving the
mouse on your desk or table and clicking on an icon or button on your screen. A
mouse has two buttons and a central wheel used for scrolling. Mouse’s are a
necessary part of a PC.
Keyboard
A keyboard is the most common and widely
used input device. It is made up of buttons called keys that are arranged into
sections. A keyboards layout is arranged into sections; Function keys (F1, F2 ect),
Numeric keys, alphabetic keys and the arrow keys. Keyboards have shortcuts that
are made up of multiple keys, these shortcuts include actions like zoom in and
out, undo and redo, and Print screen.
Microphone
A microphone is used to input sound. The sound
is detected by the microphone and an electrical signal is transmitted to the
computer. Special hardware is used to convert this analogue data into digital
data it can be stored and altered.
Scanner
Scanners are used to input pictures or
documents onto a computer. Once the picture or document is scanned into the
computer it is usually stored in an image format but can be changed into a text
file using special software called Optical Character Recognition. This can be
used to convert text on the paper into text which can be edited with a word
processor. A scanner can come in three types; Flatbed Scanners, Handheld
Scanners and Specialist Scanners.
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