What is the purpose of bios in a system, Computer Engineering

BIOS or Basic Input/Output System is the first program accessed by the processor during start up to make sure that all the other basic programs, hard drives, ports, peripherals and the central processing unit are in good working condition. BIOS is dissimilar from the computer's operating system. The operating system resides in the hard drive and gives the user interface that can be seen on the screen after start up. The BIOS program, on the other hand, can be found right in a flash memory chip or ROM located in the motherboard. It is the basic necessity for booting a computer.

BIOS Functions

BIOS have various functions in a computer but its most important task is to load the operating system. BIOS gives the microprocessor its first instructions upon activating the computer. The instructions of the BIOS to the microprocessor during start up are the following: power on self test which tests the operating status of all the hardware in the computer, activation of other BIOS chips in some other computer mechanism like SCSI and graphics cards, checking and management of computer peripherals by low level routines during the start-up process, and management of clock, hard drive and other settings.               

 

Posted Date: 4/6/2013 12:29:29 AM | Location : United States







Related Discussions:- What is the purpose of bios in a system, Assignment Help, Ask Question on What is the purpose of bios in a system, Get Answer, Expert's Help, What is the purpose of bios in a system Discussions

Write discussion on What is the purpose of bios in a system
Your posts are moderated
Related Questions
How can we change almost any algorithm to have a good best case running time? Check whether the input constitutes an input at the very starting Or else run the original algo

Determine the level of state decomposition The level of state decomposition must be determined by judgement. A too fine grained model is unsuitable, such as, modelling all poss

MP4 (MPEG-4) MPEG-4 files are in a format which can hold a mixture of multimedia objects like video, audio, animation, images etc. MP4 players again use compression technology

Q. Illustrate Programming Based on Message Passing? Since we know programming model based on message passing employs high level programming languages such as C/C++ along with a

Functions for Message Passing: MPI processes don't share memory space and one process can't directly access other process's variables. Therefore they need some form of communi

What is Block scope Block scope: The variables with block scope appear in a block or within the list of formal parameter declarations in a function definition. It is visible

What is MMU? MMU is the Memory Management Unit. It is a special memory control circuit used for executing the mapping of the virtual address space onto the physical memory.

How can I go in the symbol for the new Euro currency in my spreadsheet? Ans) Microsoft suggestted a new Tahoma font with the Euro symbol.

DVD-ROM employs same principle as a CD-ROM for reading and writing. However a smaller wavelength laser beam is used. Total capacity of DVD-ROM is 8.5GB. In double-sided DVD-ROM two

How are devices represented in UNIX? All devices are shown by files called special files that are located in /dev directory. Therefore, device files and other files are named a