Question

What is the difference between static RAM and dynamic RAM?

(a) Static RAM must be refreshed, dynamic RAM does not

(b) There is no difference

(c) Dynamic RAM must be refreshed, static RAM does not

(d) SRAM is slower than DRAM

This question was addressed to me during a job interview.

I need to ask this question from Erasable Programmable Read Only Memory in division Memory Devices of Digital Circuits

Answer 1

Correct choice is (c) Dynamic RAM must be refreshed, static RAM does not

The explanation is: Dynamic RAM must be refreshed because it made up of capacitor, and capacitor required refresh. Static RAM made up of flip flop and it doesn’t required a refresh.