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Chapter 2

Chapter 2. Computer Hardware. Desktop and Portable Computers. Desktop Computer Portable computer Notebook computer Tablet computer UMPC. Microprocessor Basics. Microprocessor. Microprocessor Basics. Front side bus Microprocessor clock Word size Cache CISC vs. RISC.

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Chapter 2

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  1. Chapter 2 Computer Hardware Chapter 2: Computer Hardware

  2. Desktop and Portable Computers • Desktop Computer • Portable computer • Notebook computer • Tablet computer • UMPC Chapter 2: Computer Hardware

  3. Microprocessor Basics Microprocessor Chapter 2: Computer Hardware

  4. Microprocessor Basics • Front side bus • Microprocessor clock • Word size • Cache • CISC vs. RISC Chapter 2: Computer Hardware

  5. Microprocessor Basics • Serial processing • Parallel processing • Dual core processor • Hyper-Threading Technology Chapter 2: Computer Hardware

  6. Today’s Microprocessors Chapter 2: Computer Hardware

  7. Random Access Memory • Random Access Memory Chapter 2: Computer Hardware

  8. Random Access Memory • Capacitors • Most RAM is volatile Chapter 2: Computer Hardware

  9. Random Access Memory • RAM capacity is expressed in megabytes or gigabytes • Personal computers • Virtual memory Chapter 2: Computer Hardware

  10. Random Access Memory • RAM speed is often expressed in nanoseconds or megahertz • SDRAM • RDRAM Chapter 2: Computer Hardware

  11. Read-Only Memory • ROM • ROM BIOS Chapter 2: Computer Hardware

  12. EEPROM • Electrically Erasable Programmable Read-Only Memory • Permanence • Power? Chapter 2: Computer Hardware

  13. Storage Basics • Storage medium • Storage device Chapter 2: Computer Hardware

  14. Magnetic Storage • Magnetic storage Chapter 2: Computer Hardware

  15. Magnetic Disk Hard disk platters and read-write heads are sealed inside the drive case or cartridge to screen out dust and other contaminants. Chapter 2: Computer Hardware

  16. Magnetic Disk • A controller positions the disk and read-write heads to locate data • Durability? Chapter 2: Computer Hardware

  17. Magnetic Disk and Tape Technology • Floppy disk • Tape drive • A tape is a sequential storage medium Chapter 2: Computer Hardware

  18. CD and DVD Technology • Optical storage stores data as microscopic light and dark spots on the disk surface • CD and DVD storage technologies Chapter 2: Computer Hardware

  19. CD and DVD Technology Chapter 2: Computer Hardware

  20. Solid State Storage • Solid state storage • Non-volatile • Card reader may be required Chapter 2: Computer Hardware

  21. Solid State Storage • USB flash drive • U3 drive Chapter 2: Computer Hardware

  22. Storage Wrap-up Most desktop computers have several drive bays Chapter 2: Computer Hardware

  23. Storage Wrap-up Chapter 2: Computer Hardware

  24. Basic Input Devices • Keyboard • Pointing device • Touch screen Chapter 2: Computer Hardware

  25. Display Devices • CRT • LCD • Plasma Chapter 2: Computer Hardware

  26. Display Devices • Viewable image size • Dot pitch • Viewing angle width • Refresh rate • Color depth • Resolution • VGA, SVGA, XGA, SXGA, UXGA, and WUXGA Chapter 2: Computer Hardware

  27. Display Devices Chapter 2: Computer Hardware

  28. Printers • Ink-jet printer • A laser printer works like a photocopier Chapter 2: Computer Hardware

  29. Printers • Dot matrix printers Chapter 2: Computer Hardware

  30. Installing Peripheral Devices • Data bus • Expansion cards • Expansion slot • PCMCIA slot Chapter 2: Computer Hardware

  31. Installing Peripheral Devices An expansion card slides into an expansion slot and is secured with a small screw. Chapter 2: Computer Hardware

  32. Installing Peripheral Devices • Expansion port • Peripheral device may include the Plug and Play feature, or require a device driver Chapter 2: Computer Hardware

  33. Surge Protection and Battery Backup • Power surge • Surge strip • UPS Chapter 2: Computer Hardware

  34. Basic Maintenance • Computer component failures can be caused by manufacturing defects and other circumstances beyond your control • Keep the keyboard clean • Clean your computer screen on a regular basis • Keep the area clean around your computer • Make sure fans are free of dust Chapter 2: Computer Hardware

  35. Troubleshooting and Repair • Telltale signs that your computer is in trouble • Failure to power up • Loud beep • Blue screen of death • Help and Support Center • Safe Mode Chapter 2: Computer Hardware

  36. Chapter 2 Complete Computer Hardware Chapter 2: Computer Hardware

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