Jamia Millia Islamia Computer Previous Year Questions (PYQs) – Page 22 of 29
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Showing 284 questions
Which of the following represents a character in the ASCII encoding scheme?
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Solution
ASCII characters are represented using 7-bit or 8-bit binary codes. For example:
'A' = 65 = 01000001 in binary.
____ truth table entries are necessary for a four-input circuit.
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Solution
Number of input combinations = 2^4 = 16.
Which of the following is not a universal logic gate?
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Solution
NAND and NOR are universal gates (all logic circuits can be made using them).
Hence XNOR is not a universal gate.
What is the primary difference between the compiler and the interpreter?
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Solution
A compiler converts the entire source code into machine code before execution, while an interpreter translates and executes code line by line.
Simplify the Boolean expression (three variables):
$
F=\;A'BC\;+\;A'B'C\;+\;ABC'\;+\;A'B'C'\;+\;ABC\;+\;AB'C'
$
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Solution
Group terms:
- $ABC + ABC' = AB$
- $A'B'C' + AB'C' = B'C'$
- $A'BC + A'B'C = A'C$
Hence
$
F = AB \;+\; B'C' \;+\; A'C.
$
This is already minimal (no further absorption).
$\boxed{F = AB + A'C + B'C'}$
Intel 8085 is a(n) _______ bit microprocessor.
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Solution
Intel 8085 is an 8-bit microprocessor with a 16-bit address bus.
What is the base number in OCTAL numbering system?
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Solution
Octal number system uses digits 0–7 and its base is 8.
Minimize the following 3-variable function:
$F(A,B,C)=\sum(0,1,6,7)$
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Solution
Minterms 0(000) and 1(001) → pair ⇒ $A'B'$.
Minterms 6(110) and 7(111) → pair ⇒ $AB$.
So $F = A'B' + AB$ (XNOR, independent of $C$).
Which of the following is not a Web Browser?
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Solution
iOS is an operating system, not a browser.
Which of the following number systems uses base 16?
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Solution
Hexadecimal number system uses digits 0–9 and A–F and has base 16.
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