Question

Which type of memory is used to store the BIOS (BASIC INPUT OUTPUT SYSTEM) in a computer?

• A. ROM
• B. DRAM
• C. Flash Memory
• D. SRAM

Hint:

Think about volatility. System firmware like BIOS must persist without power. This immediately rules out volatile memory types like DRAM and SRAM. ROM is the general category for non-volatile memory where data is permanently stored.

Answer 1

The Correct Option is A

Step 1: Define the BIOS function.
The BIOS is firmware that initializes hardware during system startup and provides runtime services to the operating system and programs. Its non-volatile nature ensures data retention when power is off.

Step 2: Assess memory types. 
(A) ROM (Read-Only Memory) is a non-volatile memory programmed at the factory, ideal for storing permanent firmware like the BIOS. 

(B) DRAM (Dynamic Random-Access Memory) is volatile main system memory, losing data upon power loss. 

(C) Flash Memory is non-volatile memory that can be electronically erased and reprogrammed. Modern BIOS implementations use Flash Memory for easy updates; it's a type of ROM (EEPROM). 

(D) SRAM (Static Random-Access Memory) is volatile memory, commonly used in CPU caches for its speed. 

Conclusion: Traditionally, BIOS was stored in ROM. While flash memory is now standard, ROM remains the broader, correct classification.