BIOS (Basic Input/Output System)
The BIOS (Basic Input/Output System) is a collection of services on a ROM. It enables hardware and software, operating systems and applications, and also applications and users to communicate with each other. The BIOS services are loaded automatically into specific addresses. Also these services should always be accessible. BIOS services are updated and expanded to handle newer devices and greater demands. When you replace the ROM chip in your computer with an upgrade chip you will get a new BIOS. Like the standard BIOS, BIOS extensions are also implemented on a ROM chip located on a Mother Board or an expansion board.
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