ROM stands for Read Only Memory. ROM is a permanent store of instructions which cannot be erased or changed and is not lost when the power is switched off.
The ROM-BIOS, which is a permanent part of the Motherboard, uses Flash memory, a type of ROM.
The instructions on the ROM chip are electronically written on to it.
A typical ROM-BIOS chip contains information of the devices installed in
the computer and the configuration of these devices.
It also keeps the system time and various other settings, which the user can change according to his/her usage.
ROM-BIOS is soldered onto the motherboard.
