ROM (Read-Only Memory) is a type of memory that retains data even when the power is turned off. It is non-volatile memory and can only be read, which means that you cannot write or modify the contents of ROM.
RAM (Random Access Memory) is a type of volatile memory that is used to store data that the computer is currently processing. RAM chips are used to temporarily store data while the computer is running. RAM is volatile memory, which means that it loses its data when power is turned off.
In summary, the main difference between ROM and RAM is that ROM is non-volatile memory that retains data even when the power is turned off, while RAM is volatile memory that is used to store data temporarily while the computer is running.