BIOS Meaning and
Definition
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BIOS, an acronym for Basic Input/Output System, refers to a fundamental software program embedded on a computer's motherboard. It is responsible for initializing and controlling a computer's hardware components during the boot process. The BIOS provides the essential interface and communication pathway between the operating system and the hardware devices plugged into the system.
When a computer is powered on, the BIOS is the first software to start executing. Its primary functions include performing the Power-On Self-Test (POST) to check if all hardware devices are functioning properly, initializing key components like the processor, memory, and storage devices, establishing communication protocols with peripheral devices like the keyboard and mouse, and loading the operating system into memory to start its execution.
The BIOS is typically stored on a flash memory chip on the motherboard and can be updated or modified by the manufacturer or the user as needed. It contains configuration settings and parameters for the hardware devices connected to the computer, allowing the user to access and modify these settings through a "setup utility."
While the BIOS has been the traditional way of initializing computer systems, it is increasingly being replaced by the more advanced and flexible Unified Extensible Firmware Interface (UEFI). UEFI offers additional features and security enhancements over BIOS, but both serve the same purpose of initializing the computer and allowing it to communicate with its hardware components.
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A substance found in cultures of growing yeast which is supposed to be necessary to the growth of yeast in any medium.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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