Q. Which of the following memories need refresh?
✅ Correct Answer: (B)
DRAM
Explanation:
DRAM (Dynamic Random Access Memory) needs to be refreshed periodically because it stores data in capacitors, which tend to lose their charge over time. To prevent data loss, the contents of DRAM are refreshed at regular intervals.
- On the other hand, SRAM (Static Random Access Memory) does not need refreshing because it stores data in flip-flops, which maintain their state as long as power is supplied.
- COM (likely referring to a type of memory like ROM or other) does not require refreshing.
Explanation by: Krishna Sharma
DRAM (Dynamic Random Access Memory) needs to be refreshed periodically because it stores data in capacitors, which tend to lose their charge over time. To prevent data loss, the contents of DRAM are refreshed at regular intervals.
- On the other hand, SRAM (Static Random Access Memory) does not need refreshing because it stores data in flip-flops, which maintain their state as long as power is supplied.
- COM (likely referring to a type of memory like ROM or other) does not require refreshing.