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Jamia Millia Islamia Previous Year Questions (PYQs)

Jamia Millia Islamia Digital Logic PYQ

Jamia Millia Islamia PYQ
The expression of an XOR gate is —





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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MILLIA ISLAMIA MCA 2024 PYQ

Solution

The logical expression for XOR (Exclusive OR) is true when inputs are different, therefore its expression is $A'B + AB'$.
Jamia Millia Islamia PYQ
Multiply 1101 by 1011 (binary multiplication):





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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MILLIA ISLAMIA MCA 2023 PYQ

Solution

$1101_2 = 13_{10}$ $1011_2 = 11_{10}$ $13 \times 11 = 143_{10}$ Convert $143_{10}$ to binary: $143_{10} = 10001111_2$
Jamia Millia Islamia PYQ
Minimum number of two-input NAND gates used to perform the function of two-input OR gate is





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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MCA 2017 PYQ

Solution

$A + B = \text{NAND}(\text{NAND}(A,A), \text{NAND}(B,B))$. Hence, $3$ NAND gates required. $\boxed{3}$
Jamia Millia Islamia PYQ
The universal gate is …





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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MILLIA ISLAMIA MCA 2022 PYQ

Solution

NAND and NOR are universal; here option is NAND. 
Jamia Millia Islamia PYQ
The inputs of a NAND gate are connected together. The resulting circuit is 





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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MILLIA ISLAMIA MCA 2022 PYQ

Solution

NAND with tied inputs gives ¬(A·A)=¬A → NOT gate.
Jamia Millia Islamia PYQ
____ truth table entries are necessary for a four-input circuit.





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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MILLIA ISLAMIA MCA 2022 PYQ

Solution

 Number of input combinations = 2^4 = 16. 
Jamia Millia Islamia PYQ

A technique used by codes to convert an analog signal into a digital bit stream is known as —






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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MILLIA ISLAMIA MCA 2024 PYQ

Solution

The process of converting an analog signal into a digital signal using coding is called Pulse Code Modulation (PCM).
Jamia Millia Islamia PYQ
An electronic path that sends signals from one part of computer to another is —





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Jamia Millia Islamia Previous Year PYQ Jamia Millia Islamia JAMIA MILLIA ISLAMIA MCA 2024 PYQ

Solution

A Bus is an electronic communication path that transfers data and signals between different parts of a computer.

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