What is the difference between RAM and ROM and how are they used in computer systems?

Key Differences Between RAM and ROM in Computer Systems

RAM (Random Access Memory) and ROM (Read-Only Memory) are two types of memory used in computer systems, each serving a unique purpose.

RAM:

• RAM is a volatile memory that stores data and instructions that the CPU can access randomly.
• It is used for temporarily storing data while the computer is running.
• Data in RAM can be read from and written to, allowing for quick access and manipulation.

ROM:

• ROM is a non-volatile memory that contains pre-programmed data and instructions that are permanently stored.
• It is used to store the BIOS (Basic Input/Output System) and firmware of devices.
• Data in ROM is read-only, meaning it cannot be modified or deleted during normal operation.

Usage in Computer Systems:

RAM is used for tasks that require quick access to data and instructions, such as running applications and programs. It provides temporary storage for data actively being used by the CPU.

ROM, on the other hand, is used to store essential system software and firmware that are needed to boot up the computer and initialize hardware components. It is responsible for starting the computer and loading the operating system.

In summary, while RAM provides temporary storage for data during the computer's operation, ROM holds essential system software and instructions needed for the computer to function properly.