Computer Hardware_paul


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Computer Hardware_paul

  1. 1. Computer Hardware<br />
  2. 2. What is Computer Hardware?<br />Refers to the physical and mechanical components of the computer system.<br />It consists of devices such as:<br /><ul><li>circuit boards
  3. 3. chips
  4. 4. Monitors
  5. 5. Disks
  6. 6. Disk drives
  7. 7. Modem
  8. 8. Keyboards
  9. 9. Printers</li></li></ul><li>Evolution of Computer Hardware<br />
  10. 10. Mechanical Calculator<br />made by Wilhelm Schickard.<br />used cogs and gears similar to those in clocks .<br />
  11. 11. Punch Card Technology<br />made by International Business Machine (IBM)<br />made from stiff lightweight cardboard, punch cards were used by data processing machines to record information.<br />
  12. 12. Electronic Numerical Integrator Analyzer and Computer(ENIAC)<br />designed by John Presper and John William Mauchly.<br />it was built by the US Army in 1945 to calculate the trajectory of ballistic missiles, at a cost of almost $500,000. <br />
  13. 13. Functions of Computer Hardware<br />
  14. 14. STORAGE<br />Refers to the ability of computer to store and retain data in their memories<br /> Types of Memory<br />Volatile memory - refers to computer memory that requires electric power to maintain stored data.<br /> ex. Random-access memory (RAM)<br />2. Non-volatile memory – retains data even if electric is cut off.<br /> ex. hard disks, floppy disks, and CD ROMs<br />
  15. 15. Process<br />Data processing - Is defined as the conversion of data from one format to another<br />DATA – refers to a collection of numbers and characters which the computer understands.<br />MICROPROCESSOR – brain of the computer<br />controls the flow of data – Central processing unit (CPU)<br />
  16. 16. Method of Processing<br />Parallel Processing - harnesses the power multiple processors in one computing entity to perform a single task.<br />Distributed Processing - is used to bind multiple computing entity so that they become a single centralized unit focused on common task or goal.<br />
  17. 17. Input<br />computer hardware can take commands and be fed with information<br />Input Devices<br /><ul><li>Keyboard
  18. 18. Mouse
  19. 19. Trackball
  20. 20. touch pad
  21. 21. Joystick
  22. 22. graphic tablet
  23. 23. light pen
  24. 24. cyber gloves
  25. 25. touch screen</li></li></ul><li>Output<br />ways for computers to communicate to the outside world, beginning with you.<br />Output Devices<br /><ul><li>Monitor or screen
  26. 26. Speaker
  27. 27. printer</li></li></ul><li>Parts of the computer<br />
  28. 28. Monitor<br />screen that displays what is going on in the computer.<br />
  29. 29. Keyboard<br />Used to input textual information to the computer<br />
  30. 30. Mouse<br />lets you feeds instructions to the computer by simply pointing and clicking in a graphical environment<br />
  31. 31. System Case<br />box that house the CPU.<br />It has expansion slots contains spare drive bays, and allows space to work inside for attachments to the system unit. <br />
  32. 32. Motherboard<br />main circuit board in the computer.<br />Its chipset must support the kind of hardware you want with your system. <br />
  33. 33. Main memory/RAM<br />allows computers to store and retain information.<br />
  34. 34. Processor<br />brain of the computer that handles the flow of all data.<br />
  35. 35. Hard Disk<br />storage device that holds the operating system and other programs and data files.<br />
  36. 36. Floppy Disk Drive<br />Perhaps the slowest form of long term secondary storage for the computer is the floppy disk with 1.44 MB disk drive.<br />
  37. 37. CD-ROM/DVD-ROM Drive<br />reads CDs or DVDs.<br />
  38. 38. Video/Graphics Card<br />most graphics cards today have at least 32 MB.<br />Using a card that has less might cause problems with the computer you are building because many programs that use heavy graphics will not work.<br />
  39. 39. Sound Card<br />converts data into sound to be sent to speakers or converts sounds to digital formats.<br />
  40. 40. Cable Connectors<br />computer parts cannot come together by themselves. <br />
  41. 41. Other Peripherals<br />optional devices that you connect to your computer, like printers and removable storage devices.<br />
  42. 42. Prepared by:<br />Charity_Castro<br />