Basic Input And Output System Of A Computer

Also an exaggeration to say that PC is the most widely used consumer electronics gizmo in the world today. Like any other machine PC could be malfunctioning sometimes. To regain the PC into it is normal health, PC support is must. For mending the PC, knowledge of PC components is important. The firmware interface is one of the most essential PC components. Basic Suggestions and Output System (BIOS in short form) is the de facto standard of firmware interface. Knowing of BIOS is prerequisite for mending PC hardware. Bios chip programmed

THE BIOS features

BIOS is only a software embedded in a non volatile RANGE OF MOTION chip on the mainboard. BIOS is also known as Basic Integrating Functioning System.

Purpose of using the BIOS

The main purpose of BIOS is to load and start the operating system. Prior to doing which it checks the occurrence of numerous hardware components including display, keyboard, Recollection, hard drive, floppy drive, optical drive and so forth It runs some diagnostic routines on those devices and control them. If all the hardware components are simply to be in proper working condition, it performs the setup of all components. More it reports the problem report to the customer.

User Interface of the BIOS

The interface menu system could be reached by hitting a certain key during the LAPTOP OR COMPUTER booting up period. The next functions could be performed by using the THE BIOS interface:

1 ) Components configurations
2. Activating and deactivating system components
3. Password prompt setting
4. System clock setting
5. Selecting a booting device
6. Modifying memory adjustments
7. Changing power on configurations
8. Changing enthusiast tempo

BIOS library

The BIOS features a selection of output and suggestions functions. These functions could be called to control the businesses of peripherals, such as keyboard, screen, and so forth Exterior software could invoke these functions too. In some Personal computers few peripherals include their own bios which includes more functionality.

Evolution of THE BIOS

BIOS has been growing over times. Though THE BIOS is still widely used, but it is little by little being replaced by Extensible Firmware Interface (EFI in short form). However right now EFI is being employed by Windows OS promoting GPT and Linux Nucleus 2. 6. 1 )

Hardware Architecture

Generally THE BIOS is made for 16 tad and 32 bit structure. EFI is written for 64 bit architecture. Inside the 16 bit structures BIOS routines used to be invoked by working systems to gain access to hardware. In the 32 bit structures the operating systems immediately access the hardware by invoking their own device drivers.

Programming the THE BIOS

In the previously version of PCs, THE BIOS used to be developed into non volatile RANGE OF MOTION. In the modern variations of PCs, BIOS is stored into rewritable storage. Thus the BIOS content could be rewritten. The rewriting of BIOS is also referred to as flashing. Flashing is performed with a special program. The flashing program is generally provided by the systems manufacturer. The flashing is generally done to upgrade the THE BIOS to a brand new version to fix bugs in order to improve performance or to support new PC hardware.

THE BIOS Over-locking

In the THE BIOS over-locking process the rate of the CPU could be increased from the factory preset value. Over-locking makes the PC faster. But over-locking reduces lifespan of the CPU.

Disease Attack On BIOS

The amount of viruses that attack THE BIOS is very less, just 3. Two of those viruses were created for demonstration purpose. Those two viruses are “CIH” and “Black Hat 2006”. The third virus is known as “Persistent BIOS infection”. To make sure that THE BIOS is virus free, computer virus removal program should be run periodically.

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