Which type of memory is used to store the BIOS (BASIC INPUT OUTPUT SYSTEM) in a computer?
Show Hint
- ROM
- DRAM
- Flash Memory
- SRAM
The Correct Option is A
Solution and Explanation
Step 1: Understand the function of BIOS.
The BIOS is firmware used to perform hardware initialization during the booting process (power-on startup) and to provide runtime services for operating systems and programs. It needs to be non-volatile, meaning its contents are preserved even when the power is turned off.
Step 2: Evaluate the memory types.
(A) ROM (Read-Only Memory) is non-volatile and, in its classic form, is programmed at the factory. This fits the requirement for storing permanent firmware like the BIOS.
(B) DRAM (Dynamic Random-Access Memory) is volatile memory used as the main system memory. It loses its contents when power is removed.
(C) Flash Memory is a type of non-volatile memory that can be electronically erased and reprogrammed. Modern motherboards use Flash Memory for the BIOS to allow for easy updates, but it is fundamentally a type of ROM (specifically, EEPROM).
(D) SRAM (Static Random-Access Memory) is a type of volatile memory, typically used for CPU caches due to its high speed.
Conclusion: Traditionally, BIOS is stored in ROM. While flash memory is the modern implementation, ROM is the correct general category.
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