INFORMATIONPROCESSINGCYCLE 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.
Definition of Input Definition of Output Definition of Processing
Keyboard Mouse Joystick Graphics Tablet Touch Display Speech Recognition Device Scanners Sound Board Digital Camera INPUT DEVICES (p.450) New Technology
Monitor – CRT and LCD Printers Laser Ink Jet Plotter Microfilm Synthesizers Robots Output Devices (p.451)
Hardware on the Outside • http://parenting.kaboose.com/education-and-learning/learning-resources/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/comp-les2.html
STORAGE DEVICES (p. 453-455) • Hard Drive • Diskette (Floppy) Drive • CD • DVD • Can you name others? • SIM Card • USB Drive • Camera Card • Memory (short-term and long-term) • ROM (Read Only Memory) – permanent/unchanging • RAM (Random Access Memory) – can be added to http://resources.kaboose.com/brain/comp_les4.html
PROCESSING CYCLE • RETRIEVE INSTRUCTION • DECODE INSTRUCTION • EXECUTE INSTRUCTION • STORE RESULT