[amp_mcq option1=”SRAM” option2=”DRAM” option3=”ROM” option4=”All of the above E. None of the above” correct=”option2″]
The correct answer is B. DRAM.
- SRAM (Static Random-Access Memory) does not need refresh. It uses a flip-flop to store each bit of data, which is a circuit that maintains its state indefinitely as long as power is supplied.
- DRAM (Dynamic Random-Access Memory) does need refresh. It uses a capacitor to store each bit of data, which can lose its charge over time. To prevent this, DRAM must be refreshed periodically by reading and rewriting the data.
ROM (Read-Only Memory) does not need refresh. It is a type of non-volatile memory, which means that it retains its data even when power is turned off.
All of the above is incorrect because SRAM does not need refresh.
- None of the above is incorrect because DRAM does need refresh.