bios screen
the Basic Input/Output System (BIOS), also known as the system BIOS or ROM BIOS , is a de facto standard defining a firmware interface The name originated from the Basic Input Output System used in the CP/M operating system (released in 1976). The BIOS software is built into the PC,
and is the first software run by a PC when powered on. The fundamental
purposes of the BIOS are to initialize and test the system hardware
components, and to load an operating system or other programs from a
mass memory device. The BIOS provides a consistent way for application
programs and operating systems to interact with the keyboard, display,
and other input/output devices. Variations in the system hardware are
hidden by the BIOS from programs that use BIOS services instead of
directly accessing the hardware.
