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Fundamental elements of computer

Dec 13, 2014

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  • 1. FUNDAMENTAL ELEMENTS OFA COMPUTER

2. 3. Output Device System Unit Input Devices 4. SYSTEM UNIT

  • THE CORE OF A COMPUTER IS RESPONSIBLE FOR PROCESSING AND STORING DATA AND CONTROLS ALL COMPUTER FUNCTIONS.

5. 6. 7. 8. 9. THE SYSTEM CASE

  • IS A PLASTIC AND METAL BOX THAT HOUSES COMPONENTS SUCH AS MOTHERBOARD, DISK DRIVES AND POWER SUPPLY UNIT

10. SYSTEM CASE TYPE

  • DESKTOP CASE-is designed to sit horizontally on a surface so that it is wider than it is long.

11. TOWER CASE

  • IS DESIGNED TO SIT VERTICALLY ON A SURFACE SO THAT IT IS HIGHER THAN IT IS WIDE.

12. PARTS OF THE CASE 13. MOTHERBOARD

  • IS THE MOST IMPORTANT COMPONENT OF YOUR COMPUTER, ONE POINT OR ANOTHER, EVERY OTHER COMPONENT CONNECTS TO THE MOTHERBOARD

14. 15. 16. THE CPU

  • TheC entralP rocessingU nit- is the device that interprets and executes instructions. The CPU is the chip that functions as the brain of a computer.

17. 18. MEMORY 19. MAIN MEMORY

  • VERY CLOSELY CONNECTED TO THE PROCESSOR.
  • THE CONTENTS ARE QUICKLY AND EASILY CHANGED.
  • HOLDS THE PROGRAMS AND DATA THAT PROCESSOR IS ACTIVELY WORKING WITH.
  • INTERACTS WITH THE PROCESSOR MILLIONS OF TIMES PER SECOND.

20. RAM(Random Access Memory

  • Means the memory cells can be accessed in any order.
  • Its just a normal memory which means the computer can store, retrieve, alter or delete any items. It can be read and write. (volatile)

21. DIMM (Dual Inline Memory Module)

  • A computer RAM or main memory is build from a small circuit board or memory chip called MEMORY MODULES.
  • DIMM chips usually 64MB, 128MB or 256 MB, have to access pathways (read and write at the same time)

22. 23. ROM BIOS Read Only Memory Basic Input Output System

  • Provides the industry standard program code that operates the fundamental components of the PC.
  • Ensures that the design of each manufacturers motherboard is PC-compatible.

24. CMOS RAM ComplimentaryMetal-Oxide Semiconductor

  • Stores the configuration of the PC (password, disk types, amount of memory installed, current time and date.)
  • Require very little power to operate and use battery power to maintain their settings.

25. SECONDARY MEMORY

  • IS WHERE PROGRAMS AND DATA ARE KEPT ON A LONG TERM BASIS.
  • COMMON SECONDARY STORAGE DEVICES ARE THE FLOPPY DISK, HARD DISK, AND COMPACT DISK, FLASH DISK.

26. FLOPPY DISK (DISKETTE)

  • IS A ROUND BUT COMES PERMANENTLY SEALED IN A SQUARE DUST JACKET.
  • THE TYPICAL 3 FLOPPY DISK CAN HOLDS 1.44 MB.

27. 28. HARD DISK

  • MIGHT HAVE A CAPACITY OF 40 GB.
  • IS NON REMOVABLE , ITS STUCK PERMANENTLY INSIDE THE SYSTEM UNIT
  • ITS ALSO CALLED AS FIX DISK

29. 30. 31. COMPACT DISK CD

  • A CD THAT HOLDS MUSIC IS CALLED Music CD or Audio CD)
  • A CD THAT HOLDS computer data is called as data CD
  • It is also called as CD ROM.

32. CD-RW (CD-ReWritable)

  • A blank CD which you can write onto blank and then edit what you wrote.

DVD (Digital Versatile Disk)

  • Can hold more information, a two hour movie or 4.7GB of data

33. OTHER PERIPHERAL DEVICES 34. VIDEO CARD

  • A board that plugs into PC to give display capabilities
  • It also called as video adapter, video board, video display board or graphics card.

35. 36. INTERNAL MODEM

  • IN ORDER TO CONNECT TO THE INTERNET YOU NEED SOME FORM OF MODEM (Modulator/Demodulator)
  • Modem convert (modulate) the digital code to analogue code, then convert them back (demodulate) at the other end.

37. 38. POWER SUPPLY

  • SUPPLIES THE FUEL (POWER) FOR THE COMPUTER. CONVERT THE VOLTAGE NEEDED TO THE MOTHER BOARD AND DRIVES.
  • IT ALSO CONTAINS A FAN HELPS IN COOLING THE COMPUTER

39. 40. IDE AND FLOPPY RIBBON CABLE

  • IDE stands forIntegrated Device Electronics.
  • This device contains wires that are used to transfer data between the motherboard and the drive/s.

41. End of the Lesson

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