The read-only memory (ROM) contains the computer's first set of instructions.
Initially, the PC motherboard's ROM chip served as the location for the BIOS firmware. The BIOS data is saved on flash memory in more recent computers so that it can be changed without removing the chip from the motherboard.
ROM and RAM are the two main types of internal memory. Read-only memory is referred to as ROM. Since it is non-volatile, data can be stored on it even when there is no power. Typically, a computer is started or booted up using it.
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