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GATE 2019: Digital Circuits Quiz 2

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Question 1

The switching function f (X Y Z Q) = Σm (9, 11, 7 ,3)

Question 2

A switching Function can be represented in minimization form as
F (A, B, C, D) = A’B’CD + A’BC’D + A’BCD + AB’C’D + AB’CD

Question 3

Consider the circuit given below

The expression for Y is

Question 4

Minimum number of 2 input NAND gates required to implement the logic function F = A + B + C+ D are _______.

Question 5

A Boolean expression containing 3 variable is true only if any of the following conditions is satisfied.
1) A is true and either B is true or C is false.
2) A is false and B is true
3) C is true and either A is true or B is false
The minimized Boolean expression is

Question 6

Consider the logic circuit given below.
 
(In DeMux, MSB is A and LSB is B while in Decoder MSB is A1 and LSB is A0)
The minimized expression for F is
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Sep 17ESE & GATE EC