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BIOS

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  1. BIOS stands for Basic Input Output System.
  2. It is is kind of OS pre- attached in the system
  3. Design to detect every I/O devices
  4. It holds basic drivers
  5. -checks all I/O devices
  6. -Loads main OS
  7. -Responsible for starting System switched on
  8. manufactured by AMI,Phonix,award,Baiostar
  9. POST error test, boots trap load,
  10. BIOS is unintrusive system.


CMOS and BIOS are two different components of the motherboard.

  1. CMOS work as storage if BIOS.
  2. A basic software program containing all BIOS is permanently stored in the ROM.
  3. every essencial holds program
  4. Tresh passing without knowinig is called intrusive.

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