Question

2. What is DRAM? Why does it need to refresh ? How do DRAM
is refresh to maintain data?​

Answer 1

Explanation:

In a DRAM chip, each bit of memory data is stored as the presence or absence of an electric charge on a small capacitor on the chip. As time passes, the charges in the memory cells leak away, so without being refreshed the stored data would eventually be lost.

I hope it helps u