Subject Revision:Digital Eletronics Quiz

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Question 1

In the 4 × 1 multiplexer, the output F is given by F = A ⊕ B. Find the required input ‘I₃I₂I₁I₀’.

• A1010
• B0110
• C1000
• D1110

Question 2

A digital-to-analog converter with a full-scale output voltage of 3.5V has a resolution close to 14 mV. Its bit size is:

• A4
• B8
• C16
• D32

Question 3

For the circuit shown in the following figure, the Boolean expression for the output Y in terms of inputs P, Q, R and S is

• A
• BP + Q + R + S
• C
• D(P + Q) (R + S)

Question 4

In the following sequential circuit, the initial state (before the first clock pulse) of the circuit is (Q₁,Q₀) = 00. The state Q₁Q₀, immediately after the 333rd clock pulse is

• A00
• B01
• C10
• D11

Question 5

A 3 line to 8 line decoder, with active low outputs, is used to implement a 3-variable Boolean function as shown in the figure

The simplified form of Boolean function F(A, B, C) implemented in ‘Product of Sum’ form will be

• A
• B
• C
• D

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