A device that accepts input, processes data, stores data, and produces output, all according to a series of stored instructions. 4 Step process.

4 Steps of the Computer Process

What is a computer?

A Computer is… A device that

accepts input,

processes data,

stores data, and

produces output, all according to a series of stored instructions.

4 Step process video

4 Steps

Your turn On the handout, write an example of something

besides a computer that follows the same process.

Input

Output

Process

Storage

Basic Terminology Input

Whatever is put into a computer system.

Processing

Manipulation of the data in many ways.

Storage

Area of the computer that holds data on a permanent basis when it is not immediately needed for processing.

Output

Consists of the processing results produced by a computer.

Basic Terminology Data

Refers to the symbols that represent facts, objects, or ideas.

Information

The results of the computer storing data as bits and bytes; the words, numbers, sounds, and graphics.

Memory

Area of the computer that temporarily holds data waiting to be processed, stored, or output.

Input Devices A device that gathers information and transforms

that information it into a series of electronic signals for the computer.

Input

Input Devices Keyboard

An arrangement of letters, numbers, and special function keys that act as the primary input device to the computer.

Input Devices Mouse

An input device that allows the user to manipulate objects on the screen by moving the device along the surface of a desk.

Input Devices Sound Card

A circuit board that gives the computer the ability to accept audio input, play sound files, and produce audio output through speakers or headphones.

Input Devices Modem

A device that sends and receives data to and from computers over telephone lines or cable lines.

Output Devices Devices that display, print, or transmit the results of

processing from the computer’s memory.

Output

Output Devices Monitor

Display device that forms an image by converting electrical signals from the computer into points of colored light on the screen.

Output Devices PrinterOutput device that produces text or

graphical images on paper.

Output Devices Speakers

Output devices that receive signals from the computer’s sound card to play music, narration, or sound effects.

Storage Devices Used to keep data

when the power to the computer is turned off.

Different forms

Hard disk- permanently installed inside the computer

Floppy or zip disks

CD or DVD-Writer

Flash drive

Storage

Storage CapacitiesTry it online

ProcessorsComputers use integrated circuits to

process information. The most powerful chip is called a Microprocessor.

Microprocessors can do many different types of tasks by using software from word processing to playing your favorite game.

Try it

input | output | storage | process

Your turn:

ResourceParsons, June Jamrich, and Dan Oja. Computer

Concepts. Boston: Course Technology - Thompson Learning, 2002.

Webopedia, interent.com, 8/24/04, http://www.webopedia.com/