two types of input devices/three categories of direct entry devices/output devices

Data is inputted to the computer through a keyboard.

form of input that does not require data to be keyed by someone

sitting at a keyboard.

An input device used to move the

pointer (cursor) on screen

The most common 'pointing device' used

in PCs.

display screen that is sensitive to the touch of a finger or

stylus.

A light-sensitive stylus wired to a video terminal used to draw

pictures or select menu options.

A graphics drawing tablet used for sketching new

images or tracing old ones. Also called a "graphics tablet,"

A device that can read text or

illustrations printed on paper and translates the

information into a form the computer can use.

so known as speech or voice

recognition systems that allow a user to send audio signals to a computer for

processing, recording, or carrying out commands.

It displays information in visual form, using text and

graphics. The portion of the monitor that displays the information is called the

screen or video display terminal

.