Tuesday, February 23, 2010

Input, Output, and Storage Devices

Input Device: a device that enters information into a computer.

Output Device: a device that presents data from a computer to a user.

Storage Device: a devices that records and stores data.

Sunday, February 21, 2010

Scanner

Changes images into digital data that a computer can undersatand.

Read-only memory (ROM)

A permanent type of memory storage used by the computer for important data that doesn't change.

Random access memory (RAM)

Used to temporarily store information with which the computer is currently working.

Plotter

An output device that draws graphs or pictures, usually by moving a pen.

Output Devices

A device, such as a printer, video display, or speaker, that presents data from a computer to a user.

Nonimpact printers

A printer that creates images without mechanically impacting the page, as an ink-jet or laser printer.