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Computer Hardware & Software

Computer Hardware & Software. Computer. Electronic device that has: Input Output Storage Processing. Software. Collection of instructions that tell the computer what to do Types: System Software Application Software. Operating Systems.

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Computer Hardware & Software

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  1. Computer Hardware & Software

  2. Computer Electronic device that has: Input Output Storage Processing

  3. Software Collection of instructions that tell the computer what to do Types: System Software Application Software

  4. Operating Systems Interface between the user, the application software and the computer Examples: Windows (8,7, Vista, XP) Mac OS (Mountain Lion, Leopard, OSX) Linux Android IOS

  5. Interface - The way the user communicates with the user Types: Graphical User Interface Command Line Voice Recognition

  6. Application Software Performs specific tasks Examples: Microsoft Word Internet Explorer Angry Birds

  7. System Software Utilities • Used to optimize or maintain a computer Examples: • Disk Defragmenter • Screen Saver • File Compression • Others

  8. Desktop Computer – displays all drives and hardware Window Views – ways to arrange multiple windows (right click on task bar) • Cascade, Tile Horizontal, & Tile Vertically Active Window – window you are currently working in

  9. Special Keys Alt – used with an underlined menu character Ctrl – performs a command within a menu Windows – opens the start menu Aerosnap– maximizes the window Aeroshake– minimizes all other windows

  10. Screen Shots Take a picture of what is on your monitor Print Screen – allows you to paste a picture of what is on your monitor Alt Print Screen – allows you to paste a picture of the active window Snipping tool – allows you to select what you want to create a picture of what’s on your monitor Clipboard – temporary storage area, where copied or cut items are saved

  11. Computer Eras Pre-Computer Era – not electronic • Abacus, slide rule, & mechanical calculator First Generation – powered by vacuum tubes Second Generation – powered by transistors Third Generation – powered by integrated circuits Fourth Generation – powered by microprocessors • Personal Computers Fifth Generation – artificial intelligence • Allows the computer to think, learn, and reason

  12. Types of Computers Personal Computer Mid-range Server Mainframe Supercomputer

  13. Data Data – raw, unorganized • Numbers, letters, symbols Information – data that has been processed and has meaning Bit- binary digit, smallest unit of data • Either a 1 or 0 Byte – combination of bits (8, 32, or 64 bits) • 1 byte = 1 character

  14. Data Representation

  15. What is a Computer? An electronic device that has: Input Processing Output Storage

  16. Input Hardware Accepts data from the user Examples: Keyboards Mouse Scanners Microphone Others?

  17. Processing Hardware • Microprocessor or Processor • Speed is measured in Hertz • Other hardware inside system unit • Motherboard • Expansion ports

  18. Output Hardware • Display the results (information) Examples: • Monitors/Screens • Pixel – block or dot of color • Size – measured diagonally • Printers • Laser, Ink Jet, Dot Matrix, Specialty printers • Others?

  19. Memory (Storage) • Random Access Memory (RAM) • Volatile – temporary, erased when power it turned off • Read Only Memory • Non-Volatile – permanent • Magnetic – floppies • Optical – CDs & DVDs • Flash – jump drives, memory cards • Remote

  20. Considerations (Essential *) • Processor (type and speed) * • Memory (RAM) * • Drives (type/capacity) * • Peripherals–(screen, keyboard, mouse, speakers, etc.) * • Ports or connections (types and locations) * • Price • Tasks it must perform – Gaming, productivity …. • Chassis/Form Factor (footprint) • Platform (OS) • Networking (wired and wireless) • Bundled software • Potential vendors • Warranty/Shipping/Support

  21. File Types

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