Write the difference between RAM and ROM
RAM (Random Access Memory) and ROM (Read-Only Memory) are both types of computer memory, but they have some key differences:
Volatility: RAM is volatile memory, which means that it loses its contents when the power is turned off or interrupted, whereas ROM is non-volatile memory, which means that it retains its contents even when the power is turned off.
Function: RAM is used to temporarily store data and program code that is currently being used by the computer's CPU, while ROM is used to store firmware and other essential programs that are used to boot up the computer and perform low-level system functions.
Read and Write Access: RAM is both readable and writable, which means that data can be both stored and retrieved from it. On the other hand, ROM is read-only, which means that data cannot be written to it once it is programmed, but it can be read from it.
Capacity: RAM capacity can be expanded by adding more memory modules, whereas ROM capacity is limited to the amount of memory chips installed on the computer's motherboard or other hardware components.
Speed: RAM is generally faster than ROM since it uses electronic circuits to read and write data, while ROM uses physical circuits.
Cost: RAM is generally more expensive than ROM since it requires more advanced technology to manufacture and is used in greater quantities.
In summary, RAM is a volatile, temporary memory used to store data and program code, while ROM is non-volatile, permanent memory used to store firmware and other essential programs. RAM is both readable and writable, while ROM is read-only. RAM is faster and more expensive than ROM, and RAM capacity can be expanded, whereas ROM capacity is limited.