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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/