Argthtjtr

So, BIOS is firmware for computers.

As you continue to read about computers, you will get the picture of BIOS, UEFI, EFI and so on.

The BIOS an acronym for Basic Input/Output System and also known as the System BIOS, ROM BIOS or PC BIOS) is a type of firmware used during the booting process (power-on startup) on IBM PC compatible computers.The BIOS firmware is built into PCs, and it is the first software they run when powered on. The name itself originates from the Basic Input/Output System used in the CP/M operating system in 1975.

Firmware is the combination of persistent memory and program code and data stored in it.Typical examples of devices containing firmware are embedded systems (such as traffic lights, consumer appliances, and digital watches), computers, computer peripherals, mobile phones, and digital cameras. The firmware contained in these devices provides the control program for the device.

Firmware is a generic name for all the software that is embedded on non-volatile memory. BIOS is stored in ROM, so it is firmware.

Bios - a specific type of firmware which is responsible for coordinating how your other devices (and firmware) talks to your OS. Bios can also be wielded by the user to dictate what sort of startup options (and the 'behaviour' of certain components, like RAM, CPU, GPU, etc) are run when you turn on the computer's power. Bios starts up first, before anything else, when you power on the computer.

Firmware - this is a more general term referring to the pieces of code that talk to your devices and tell the Operating System how is supposed to function with said devices.

Hopefully this is a decent broad level breakdown for those who are very new to the scene. ;)

The BIOS came about in the early days of LSI (Large Scale Integrated) Chips. It was really a mini operating system and had hooks for system programmers to use. For example outputting a character to some device. Firmware is a generic term for embedded software (and its included data) to run something. System controllers in large computer systems that control power up etc have a mini operating system (typically a mini linux) that's referred to as firmware. These terms are somewhat interchangeable but the firmware downloaded to a computer motherboard is referred as BIOS. Firmware downloaded to a video card can be referenced as BIOS as well.

Hope this helps.

Firmware is held in non-volatile memory devices such as ROM, EPROM, or flash memory. Non-volatile memory chips were / are used to ensure the information stored persists even when power is removed. The information stored could be data containing settings used to operate / identify a device, or software that executes functions in the device hardware.

BIOS is the main firmware required by PCs primarily to identify the components connected to the motherboard. An example of such a component is the primary internal hard drive.

Early PCs used ROM (read-only memory) chips for BIOS which could not be altered without replacing the ROM chip. ROM memory chips were later replaced by EPROMs (erasable programmable ROMs), and currently BIOS is stored in flash memory chips, both EPROMs and flash memory can be flashed and upgraded.

Firmware in non-PC devices may be upgradeable depending on the complexity of the device and decisions made by the manufacturer. More and more pieces of hardware have upgradeable firmware these days than in the distant past.

Maybe a BIOS is to firmware as a square is to a rectangle, but the first question should be what is a firmware to software?

I think firmware used to exist as something very specific. Some chip, for example, that was programmed once, and stayed in that original configuration forever. Just being, unchanging, firmly.

But what's like that these days? Are BIOSes still deployed on ROM chips? Do the things we think of as firmware have firmware-like qualities which distinguish them from software? Do firmware updates require professional servicing?

So I think the answer to the first question is that firmware is to software, as software. So BIOSes are also software, firmware or not.

BIOSese were once firmware. The other answers offer more about the BIOS and shed light on why that would be, but I just wanted to highlight the firmware misnomer.

The "soft" in software came about in the early days when Computer programming was written via flexible material such as punch cards, floppy discs and reams of paper. The programs were in a soft, changeable state.

When a program got coded into a solid state hardware the program was in a "firm" or fixed state. Changing the program at this point required replacing physical piece of hardware.

(FIRM softWARE) Software instructions residing in non-volatile memory chips that hold their content without power. Firmware is found on computer motherboards to hold hardware settings and booting data (BIOS) and on myriad consumer electronics devices to hold the operating system or control program.

On devices with no hard drive, such as smartphones, MP3 players and tablets, flash memory chips also hold the applications and user data; however, in this case, they are called "memory" or "storage" and not firmware.

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