GATE & PSUs - Electrical & Electronics Engineering (EE & ECE)

Combinational Circuits (Multiplexers, Decoders, Adders) question bank (Digital Electronics & Microprocessors)

Practice 7 free GATE & PSUs - Electrical & Electronics Engineering (EE & ECE) Digital Electronics & Microprocessors - Combinational Circuits (Multiplexers, Decoders, Adders) questions with answers and step-by-step solutions.

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Q1.
[Combinational Circuits (Multiplexers, Decoders, Adders) Concept 2] How many $2$-to-$1$ multiplexers are required to construct an $8$-to-$1$ multiplexer without any additional external logic gates?

(A)
$7$
(B)
$8$
(C)
$4$
(D)
$15$
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Q2.
[Combinational Circuits (Multiplexers, Decoders, Adders) Concept 7] How many $2$-to-$1$ multiplexers are required to construct an $8$-to-$1$ multiplexer without any additional external logic gates?

(A)
$7$
(B)
$8$
(C)
$4$
(D)
$15$
Show answer & solution
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