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.

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.

Mouse: Network drive

The mouse is the primary device for navigating and interacting with the computer.

Motherboard

The main circuit board to which all of the other internal components connect.

Input Devices

Any peripheral used to provide data and control signals to an information processing system, such as a computer.

DVD

Also known as Digital Versatile Disc, an optical disck that can store a large amount of digital data, as music, images, and text.

Controller

A device that controls and transfer data from the computer to a peripheral device.

Central Processing Unit (CPU)

The brain of the computer that interprets and executes instructions.

CD-ROM

A compact disk on which a large amount of digitized read-only data can be stored.

Byte

The combinations of bits used to represent a particular letter, number, or special character.

Bit

A digit in the binary number system that has two values, 0 or 1.

AMerican Standard Code for Information Iterchange (ASCII)

ASCII code are numbers used by computers to represent all the upper and lower-case latin letters, numbers, punctuation, etc.

Five types of Computers

• Supercomputers
• Mainframes
• Minicomputers
• Microcomputers

What are the parts of a computer?

• Central Processing Unit (CPU)
• Memory
• Random-access memory (RAM)
• Read-only memory (ROM)
• Basic input/output system (BIOS)
• Caching
• Virtual Memory
• Flash Memory
• Motherboard
• Power supply
• Hard disk
• Operating System
• Integrated Drive Electronics (IDE) Controller
• Accelerated Graphics Port (AGP)
• Sound Card
• Graphics Card

What is a Computer?

A computer is an electronic device that receives, process and stores data.