ROM stands for Read-Only Memory. It's a type of non-volatile memory used in computers and other electronic devices.
Key Features of ROM:
- Non-volatile: It retains data even when the power is turned off.
- Read-only: Data is written during manufacturing (or in some cases, later), but it typically can't be modified or erased by the user.
- Used to store firmware: This includes software that boots up a device or performs essential low-level operations.
Types of ROM:
- Masked ROM – Programmed during the manufacturing process.
- PROM (Programmable ROM) – Can be programmed once after manufacturing.
- EPROM (Erasable PROM) – Can be erased using UV light and reprogrammed.
- EEPROM (Electrically Erasable PROM) – Can be erased and rewritten electrically.
Common Uses:
- BIOS in PCs
- Embedded systems
- Game cartridges
- Microcontrollers
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