BIOS

 Purpose BIOS is the basic input-output system, is one of the operating system, the BIOS is usually mounted on a chip ROM meaning of ROM read-only memory, this memory BIOS non-volatile memory is not affected, because a power failure of the non-volatile memory does not lose data when the power is off. Goals are BIOS boot every PC it is turned on and after the test all equipment after configuration against the configuration data, this BIOS have the hardware and soft ware features that whey can manage hardware and software. The main purpose of BIOS is to control the input and output of the system put the operational and hardware .that instructions or program we have called FIRMWARE
Work from the BIOS
• Changing the boot order
• Load BIOS Setup Default
• Remove the BIOS password
• Create a BIOS password
• Change the date and time
• Change the date and time
• Changing the floppy disk drive
• Changing the settings for hard drives
• Enable or disable the CPU internal cache
• Enable or disable BIOS caching
• Changing the CPU parameters
• Changing the memory parameters
Etc…
Is the work of BOS