ROM is non-volatile, whereas RAM is volatile., ROM stores the BIOS and bootstrap program., RAM stands for Random Access Memory whereas ROM stands for Read Only Memory., RAM can be upgraded whereas ROM cannot., Non-volatile memory keeps its contents even when the computer is switched off. Volatile memory loses its contents when unpowered., ROM stores the BIOS (Basic Input Output System) and bootstrap program., ROM is measured in megabytes whereas RAM is measured in Megabytes., RAM can be written to and read from whereas ROM is read only and cannot be written to., RAM is used to hold data and instructions that are currently in use., BIOS runs as soon as the computer is switched on. It checks that the hardware is functioning correctly., Bootup or bootstrap program loads the computer's operating system from the hard drive into the RAM.,

Primary Memory

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