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Test: Latches - Electronics and Communication Engineering (ECE) MCQ


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10 Questions MCQ Test Digital Circuits - Test: Latches

Test: Latches for Electronics and Communication Engineering (ECE) 2024 is part of Digital Circuits preparation. The Test: Latches questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Latches MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Latches below.
Solutions of Test: Latches questions in English are available as part of our Digital Circuits for Electronics and Communication Engineering (ECE) & Test: Latches solutions in Hindi for Digital Circuits course. Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free. Attempt Test: Latches | 10 questions in 30 minutes | Mock test for Electronics and Communication Engineering (ECE) preparation | Free important questions MCQ to study Digital Circuits for Electronics and Communication Engineering (ECE) Exam | Download free PDF with solutions
Test: Latches - Question 1

When both inputs of SR latches are low, the latch ___________

Detailed Solution for Test: Latches - Question 1

When both inputs of SR latches are low, the latch remains in it’s present state. There is no change in output.

Test: Latches - Question 2

The inputs of SR latch are ___________

Detailed Solution for Test: Latches - Question 2

SR or Set-Reset latch is the simplest type of bistable multivibrator having two stable states. The inputs of SR latch are s and r while outputs are q and q’. It is clear from the diagram:

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Test: Latches - Question 3

The NAND latch works when both inputs are ___________

Detailed Solution for Test: Latches - Question 3

The NAND latch works when both inputs are 1.

Test: Latches - Question 4

The SR latch consists of ___________

Detailed Solution for Test: Latches - Question 4

SR or Set-Reset latch is the simplest type of bistable multivibrator having two stable states.
The diagram of SR latch is shown below:

Test: Latches - Question 5

How many types of latches are ___________

Detailed Solution for Test: Latches - Question 5

There are four types of latches: SR latch, D latch, JK latch and T latch. D latch is a modified form of SR latch whereas, T latch is an advanced form of JK latch.

Test: Latches - Question 6

Why latches are called memory devices?

Detailed Solution for Test: Latches - Question 6

Latches can be memory devices, and can store one bit of data for as long as the device is powered. Once device is turned off, the memory gets refreshed.

Test: Latches - Question 7

A latch is an example of a ___________

Detailed Solution for Test: Latches - Question 7

A latch is an example of a bistable multivibrator. A Bistable multivibrator is one in which the circuit is stable in either of two states. It can be flipped from one state to the other state and vice-versa.

Test: Latches - Question 8

When both inputs of SR latches are high, the latch goes ___________

Detailed Solution for Test: Latches - Question 8

When both gates are identical and this is “metastable”, and the device will be in an undefined state for an indefinite period.

Test: Latches - Question 9

When a high is applied to the Set line of an SR latch, then ___________

Detailed Solution for Test: Latches - Question 9

S input of an SR latch is directly connected to the output Q. So when a high is applied Q output goes high and Q’ low.

Test: Latches - Question 10

The first step of the analysis procedure of SR latch is to ___________

Detailed Solution for Test: Latches - Question 10

All flip flops have at least one output labeled Q (i.e. inverted). This is so because the flip flops have inverting gates inside them, hence in order to have both Q and Q complement available, we have atleast one output labelled.

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