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Components of a Computer System

Components of a Computer System. Components of a Computer System. Components of a Computer System. Inside the system unit. The cabinet Inside it :- Mother Board, CPU, RAM, ROM, Data Bus, Hard Disk, Power Supply Unit etc…. Components of a Computer System.

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Components of a Computer System

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  1. Components of a Computer System

  2. Components of a Computer System

  3. Components of a Computer System Inside the system unit • The cabinet • Inside it :- Mother Board, CPU, RAM, ROM, Data Bus, Hard Disk, Power Supply Unit etc…

  4. Components of a Computer System Processor / CPU (Central Processing Unit ) • - Brain of the Computer • Speed is measured in Hz (Eg:- 2.4GHz Processor) • Control Unit, ALU, Cache memory are in this chip • Examples:- Intel Pentium, AMD, Cyrix …..

  5. Components of a Computer System Mother Board • Main Circuit Board • ROM chip, Processor socket, Ram Slot and Chips and other electronic parts are on it

  6. Components of a Computer System Power Supply unit • Converts Alternative Current (AC) to the Direct Current (DC) and Distribute to the parts like Hard disk, Mother Board, CD ROM Drive etc..

  7. Components of a Computer System Peripheral devices • All the devices that are connected through the ports back side of the system unit

  8. Components of a Computer System Connecting Devices to ports Serial Port

  9. Components of a Computer System Connecting Devices to ports Vedio Card Port

  10. Components of a Computer System Connecting Devices to ports Parallel Port

  11. Components of a Computer System Connecting Devices to ports PS/2 Port

  12. Components of a Computer System Connecting Devices to ports USB Port (Universal serial Bus)

  13. Components of a Computer System Connecting Devices to ports Ethernet Port (Network Port)

  14. Components of a Computer System Storage Registers Cache Main Memory Disk Magnetic Tapes Low Access Time High High Cost Low

  15. Components of a Computer System Storage Smallest Unit = 1 bit 8 Bits = 1 Byte 1024 Byte = 1 KB (Kilo Byte) 1024 KB = 1 MB (Mega Byte) 1024 MB = 1 GB (Giga Byte) 1024 GB = 1 Tera Byte (TB) 1024 TB = 1 Peta Byte (PB) 1024 PB = 1 exa byte (EB) 1024 EB = 1 zetta byte (ZB) 1024 ZB = Yotta byte (YB) 1024 YB = 1 xona byte 1024 XB = 1 weka byte(WB) ……….

  16. Components of a Computer System Memory Cache Memory Random Access Memory Read Only Memory

  17. Components of a Computer System Cache Memory Why :- Holds Data that immediately use by CPU Where :- In The CPU Capacity :- 512 KB, 1 MB etc…

  18. Components of a Computer System RAM (Random Access Memory) Why :- Holds Data Temporary (Volatile) Where :- On the Mother Board Capacity :- 128MB, 256,512MB, 1 GB ….

  19. Components of a Computer System ROM (Read Only Memory)/ Firmware Why :- Holds basic instructions that the computer wants Where :- On the Mother Board Non-Volatile Memory There are 3 kinds

  20. Components of a Computer System PROM – Programmable ROM Instructions once written can not be changed EPROM – Erasable Programmable ROM Instructions can be change by using a UV (Ultra Violet) light in a ROM Burner machine. EEPROM – Erasable Programmable ROM Instructions can be change by using Electricity

  21. Components of a Computer System Secondary Storage

  22. Components of a Computer System Hard Disk Why :- Holds Data Permanently Where :- In the System unit How data Stored:- By polarizing Magnetic Particles Capacity :- 20GB, 40GB, 80 GB, 160 GB …..

  23. Tracks Platters Heads Components of a Computer System Hard Disk A sector, being the smallest physical storage unit on the disk A cluster can consist of one or more consecutive sectors.

  24. Components of a Computer System Floppy Disk Why :- Holds Data Permanently Where :-Floppy drive is in the System unit How data Stored:- By polarizing Magnetic Particles Capacity / Size :- 1.44 MB, 3 ½” inches

  25. Components of a Computer System Zip Disk & Jaz Disks Capacity :- Zip 100 to 750 MB Jaz – 1 & 2 GB

  26. Components of a Computer System Magneto Optical disk Why :- To store valuable data like films master copy etc… How data Stored:- Using Laser Head & Magnetic Head Capacity :- From 128 MB to …. GB

  27. Components of a Computer System MagnaticTapes Why :- To store data (Used for Backup purpose)

  28. Components of a Computer System Compact Disks(CD)/ Digital Versatile Disk (DVD) Why :- To store data out side the computer How data Stored:- Using Laser Lights Capacity :- CD up to 700 MB, DVD 2 GB to 8 GB

  29. Components of a Computer System Mechanism of saving data

  30. Numeric Key Pad Function Keys Components of a Computer System Input Devices Key Board Wired And Wire less Key Board Available

  31. Components of a Computer System Input Devices Mouse Y X

  32. Components of a Computer System Input Devices Tracker Ball Touch pad

  33. Components of a Computer System Input Devices Micro phone Digital Camera

  34. Components of a Computer System Input Devices OCR (Optical Character Recognition) Scanner +

  35. Components of a Computer System Input Devices Finger Print Reader

  36. Components of a Computer System Input Devices Magnetic Ink Character Recognition (MICR)

  37. Components of a Computer System Input Devices Environment Sensors

  38. Components of a Computer System Output Devices Cathode Ray Tube (CRT Monitors)

  39. Components of a Computer System Output Devices Liquid Crystal Display (LCD Monitors) Less Space Low Power consumption Brightness images No Flickers or Distortion Expensive Limited View angles

  40. Components of a Computer System Output Devices Printers Dot Matrix Laser Ink Jet

  41. Components of a Computer System Output Devices Speakers Head phones

  42. Components of a Computer System Device Drivers Software CDs provided with Devices + +

  43. Software Computer Components of a Computer System Software Instructions given to computer Liveware People who work with computers Hardware Can be seen & touch

  44. Software Components of a Computer System Software Application Software System Software Utility programs Enhance the capability of an O/S Operating Software Controls all the part of computer & lays between Hardware and Application Software Spread Sheet Word processing Web Design & Development Desktop publishing & Graphic Design Presentation Data Base Management

  45. Components of a Computer System Graphical User Interface (GUI) & Command Line Interface (CLI) commands can be given by clicking All the commands should be given by text

  46. Components of a Computer System Function of Operating System I am Typing a Letter using MS word As Windows XP bring me to the Desktop Operating System (Works as a Bridge) Hardware Application software

  47. Components of a Computer System Booting the Computer POST – Power On Self Test CMOS Setup – BIOS – Basic Input Output System Boot Strap Loader 2008.10.25 08.25 AM

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