BIOS is a program (stored in ROM), not a memory.
However the BIOS uses a battery backed up RAM to store a variety of settings and parameters. This BIOS RAM is itself volatile (it can only store data when powered), however the battery backup provides power to this RAM when the main power of the computer is off (making it act as if it were nonvolatile). When this battery dies the BIOS RAM will lose its data and (after the battery is replaced) the machine may have to be reconfigured from scratch before the machine will startup correctly.
Non-volatile
ROM is non-volatile memory.
BIOS is a set of boot programs stored on a non-volatile ROM on the motherboard which is different for every system configuration. That would simply mean that unlike other programs it has direct hardware control.
Volatile is RAM and non-volatile is like a hard drive. More specifically, "Volatile" storage will erase its contents when power is removed, while "Non-volatile" storage will have permanently stored the data (until specifically told to erase it), even after power is removed.
volatile will evaporate
volatile will evaporate
DRAM is a volatile memory
DRAM is a volatile memory
BIOS is a program (stored in ROM), not a memory.However the BIOS uses a battery backed up RAM to store a variety of settings and parameters. This BIOS RAM is itself volatile (it can only store data when powered), however the battery backup provides power to this RAM when the main power of the computer is off (making it act as if it were nonvolatile). When this battery dies the BIOS RAM will lose its data and (after the battery is replaced) the machine may have to be reconfigured from scratch before the machine will startup correctly.
Yes, a BIOS (Basic Input/Output System) is typically stored on a non-volatile memory chip, such as EEPROM (Electrically Erasable Programmable Read-Only Memory) or flash memory. This allows the BIOS to retain its data even when the computer is powered off. The EEPROM enables firmware updates to be performed, allowing for improvements and bug fixes to the BIOS.
DRAM is volatile.
The PlayStation 2 memory cards have the non-volatile and not the volatile flash memory.