INFORMATION
PROCESSING
CYCLE
Solid Blue Boxes with Video Cameras or
pictures are actually links to videos. Click
on them to advance to the web to watch.
What is a computer?
• A computer is a machine that receives data
and processes that data in some way to
produce information.
• A computer is an electronic device that
accepts data, performs computations, and
makes logical decisions according to the
data it is given, to produce information in a
form that is meaningful to humans.
How does a computer process
information?
Information Processing Cycle
Storage
Input
Processing
Output
Definition of Input
Definition of Output
Definition of Processing
INPUT DEVICES (p.450)
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Keyboard
Mouse
Joystick
Graphics Tablet
Touch Display
New Technology
• Speech Recognition
Device
• Scanners
• Sound Board
• Digital Camera
Output Devices (p.451)
• Monitor – CRT and
LCD
• Printers
– Laser
– Ink Jet
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Plotter
Microfilm
Synthesizers
Robots
Hardware on the Outside
• http://parenting.kaboose.com/educationand-learning/learningresources/comp_les1.html
Processing Devices (p. 452)
• CPU – Stores data and programs, executes
program instructions and performs operations
(THE BRAIN)
• Motherboard
– Tells EVERYBODY what to do
Hardware on the Inside
• http://resources.kaboose.com/brain/comples2.html
STORAGE DEVICES (p. 453-455)
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Hard Drive
Diskette (Floppy) Drive
CD
DVD
Can you name others?
SIM Card
USB Drive
Camera Card
• Memory (short-term
http://resources.kaboose.com/brain/comp_les4.html
and long-term)
– ROM (Read Only
Memory) –
permanent/unchanging
– RAM (Random Access
Memory) – can be
added to
PROCESSING CYCLE
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RETRIEVE INSTRUCTION
DECODE INSTRUCTION
EXECUTE INSTRUCTION
STORE RESULT