ROM

Definitions

1. Read-Only Memory — a type of non-volatile storage whose contents are written once (during manufacturing or via a programmer) and cannot be modified during normal operation. ROM typically stores firmware, bootloaders, and BIOS/UEFI code that must persist without power.

   In plain English: A chip that permanently stores essential startup instructions that can be read but not changed during normal use.

   Example: "The bootloader lives in ROM so the device can always start up, even if the flash filesystem gets corrupted."

Related Terms

• garbage collector
• Device Driver
• DMA
• Overclocking
• Register
• CPU Cache
• Low-Level Programming
• Pass by Reference
• Pass by Value
• Physical Memory
• Firmware Security
• Firmware Update