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COMPUTER BASICS Its All Geek to Me The Information Processing Cycle INPUT OUTPUT AUXILIARYSTORAGE PROCESSING MAINMEMORY.

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Presentation on theme: "COMPUTER BASICS Its All Geek to Me The Information Processing Cycle INPUT OUTPUT AUXILIARYSTORAGE PROCESSING MAINMEMORY."— Presentation transcript:

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2 COMPUTER BASICS Its All Geek to Me

3 The Information Processing Cycle INPUT OUTPUT AUXILIARYSTORAGE PROCESSING MAINMEMORY

4 INPUT DEVICES (Hardware) Keyboard Mouse Microphone Scanner Touch screens Bar code scanner Voice recognition Auxiliary Storage Device

5 OUTPUT DEVICES ( HARDWARE) Useful information that leaves the system Output Hardware includes: Monitor: soft copy Printers: hard copy Projector Voice and music - speakers OUTPUT

6 ROM R EAD O NLY M EMORY ROM R EAD O NLY M EMORYRAM ANDOM CCESS EMORY R ANDOM A CCESS M EMORYRAM Small Instructions are installed permanently at the factory Cannot be changed These instructions check the computer’s resources and looks for Operating System Main Memory Temporary—it is erased when turned off. It is where programs and data is stored while being processed MEMORY PROCESSING HARDWARE

7 PROCESSING HARDWARE Central Processing Unit: CPU The Brains or Intelligence of the computer.  Controls input and output  interprets instructions  executes instructions. Silicon chip: integrated circuit board  Pentium: name give to a particular chip Hertz: the speed of the CPU  Gigahertz: executes a billion instructions per second  Megahertz: executes a million instructions per second

8 Processors Come in Many Sizes Mainframe Mainframe: large, powerful, serving many connected terminals. Super Computers Minicomputer Minicomputer: mid-sized, serves more than one user at a time Microcomputer Microcomputer: PC, individual workstation Laptop: Laptop: portable, small Handheld Handheld: Palm Pilots

9 What is Data? Facts used by a computer Words Numbers

10 What two numbers are used in Binary Code? 0 and 1 They are each called a BIT 8 BITS make a BYTE 1 BYTE makes a letter or number KILOBYTE = 1,024 bytes MEGABYTE = 1,048,576 bytes GIGABYTE = 1,024 megabytes TERABYTE = 1,024 gigabytes

11 AUXILIARY STORAGE DEVICES Network Drive ( H: drive) Hard Disk Drive ( C:drive) Floppy Disk Drive with 3 ½” Floppy Disk ( A:drive) Jump Drive/Thumb Drive I-Pod CD Read/Write Drive DVD Zip Drive AUXILIARYSTORAGE

12 SOFTWARE Programs that Make the Computer Work Operating System Software  Vista  Windows XP: GUI (Graphical User Interface)  Unix  Linux Application Software  Microsoft Word, Excel, Access, Front Page, Publisher  WordPerfect  Illustrator, Photoshop, Dreamweaver

13 What is the Boot Process? The process of starting up a computer from a halted or powered-down condition.  Commands in ROM memory are followed The process of loading the Operating System software into Main Memory  Windows 98  Windows XP  Unix


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