NIMCET 2013 — Computer PYQ

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Question

NIMCET 2013 — Computer PYQ

NIMCET | Computer | 2013

Which of the following circuit is used as a memory device in computers?

Choose the correct answer:

Explanation

1. Flip-Flop (The Correct Answer)

A Flip-Flop is a bistable multivibrator, meaning it has two stable states. It is the basic building block of digital memory.

It can store 1 bit of data ( $1$ or $0$ ).
It uses a feedback mechanism to maintain its state even after the input signal is removed.
Collections of flip-flops are used to create Registers and SRAM (Static Random Access Memory).

2. Why the other options are incorrect

Rectifier: This is an analog circuit used to convert Alternating Current ( $AC$ ) to Direct Current ( $DC$ ). It has no data storage capability.
Comparator: This is a combinational circuit that compares two binary strings or voltages to determine if one is greater than, less than, or equal to the other. It does not "remember" the result once the inputs change.

3. Summary Table

Component	Function	Memory Capability?
Flip-Flop	Stores 1-bit of binary data	Yes
Rectifier	Converts $AC$ to $DC$	No
Comparator	Compares two values	No