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Explanation of the term BIOS
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BIOS is an acronym for Basic Input/Output System. It is the boot firmware program on a PC, and controls the computer from the time you start it up until the operating system takes over. When you turn on a PC, the BIOS first conducts a basic hardware check, called a PowerOn Self Test POST, to determine whether all of the attachments are present and working. Then it loads the operating system into your computerand39s random access memory, or RAM. The BIOS also manages data flow between the computerand39s operating system and attached devices such as the hard disk, video card, keyboard, mouse, and printer. The BIOS stores the date, the time, and your system configuration information in a batterypowered, nonvolatile memory chip, called a CMOS Complementary Metal Oxide Semiconductor after its manufacturing process. Although the BIOS is standardized and should rarely require updating, some older BIOS chips may not accommodate new hardware devices. Before the early 1990s, you couldnand39t update the BIOS without removing and replacing its ROM chip. Contemporary BIOS resides on memory chips such as flash chips or EEPROM Electrically Erasable Programmable ReadOnly Memory, so that you can update the BIOS yourself if necessary. For detailed information about BIOS updates, visit: http://www.wimsbios.com http://www.sysopt.com/articles/recoverbios/index.html