RAM (Random Access Memory) and ROM (Read-Only Memory) are two types of computer memory that serve different purposes. Here are the main differences between RAM and ROM:
| Feature | RAM | ROM |
|---|---|---|
| Definition | RAM is a type of volatile memory that stores data and instructions temporarily while the computer is running. | ROM is a type of non-volatile memory that stores instructions and data that are permanently stored and cannot be changed. |
| Function | Provides the working space for the operating system and running programs. | Holds the firmware that is used to start up the computer and perform basic functions, such as running the BIOS and booting the operating system. |
| Access Speed | Faster access speed, allowing for quick reading and writing of data. | Slower access speed compared to RAM. |
| Volatility | Volatile memory that requires a constant supply of power to retain stored data. | Non-volatile memory that retains stored data even when the power is turned off. |
| Capacity | Generally smaller capacity than ROM. | Can hold larger amounts of data than RAM. |
| Types | Includes DRAM, SDRAM, DDR, DDR2, DDR3, DDR4, etc. | Includes PROM, EPROM, EEPROM, and Flash memory. |
| Cost | RAM is generally more expensive than ROM. | ROM is generally less expensive than RAM. |
| Usage | Used for running programs and processing data. | Used for storing firmware and other system-level data that is needed for booting up and running the computer. |
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