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Its All Geek to Me

Its All Geek to Me. Computer Basics. MAIN MEMORY. OUTPUT. INPUT. AUXILIARY STORAGE. The Information Processing Cycle. PROCESSING. INPUT DEVICES (Hardware). Keyboard Mouse Microphone Scanner Touch screens Bar code scanner Voice recognition Auxiliary Storage Device. OUTPUT.

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Its All Geek to Me

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  1. Its All Geek to Me Computer Basics

  2. MAIN MEMORY OUTPUT INPUT AUXILIARY STORAGE The Information Processing Cycle PROCESSING

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

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

  5. MEMORY PROCESSING HARDWARE ROM READ ONLY MEMORY RAM RANDOM ACCESS MEMORY 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

  6. 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

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

  8. What is Data? • Facts used by a computer • Words • Numbers

  9. 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

  10. AUXILIARY STORAGE 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

  11. 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

  12. 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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