Meaning of bios (what is it, concept and definition)

What is BIOS:

BIOS is short for Basic Input Output System . It is software that works from a chip incorporated in the motherboard of the computer and from which all its functions are activated.

Being an input and output system, it manages the flow of information between the computer, the operating system and its peripheral devices.

In addition to being the part responsible for starting all hardware processes, it is also responsible for stopping startup in the event that any of the system functions have any errors.

If all the hardware (including hard drives and RAM) is working properly, then the BIOS will allow the computer's operating system to run.

Previously, the BIOS was located in ROM or EPROM memories, but since the mid-90s it began to be integrated into flash memories, which allowed the end user to update it by himself, without removing the chip from the motherboard.

Although this firmware (a program that can handle the hardware) is a key piece to start the operations of any computer, currently other types of faster systems are also used, such as DMA accesses ( Direct Memory Access or direct memory access), for entry and exit operations.

The name BIOS was created in 1975, when said piece was used for the operation of the CP / M operating system, created by Gary Kildall for the Intel 8080 microprocessor.