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mcqs of
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1 : What is the dual of the Boolean expression A ,0=0?
1
:
A + 1 = 1
2
:
A + 0 = A
3
:
A.1=A
4
:
A.0=A
2 : Which logic gate outputs true only if both inputs are true?
1
:
OR gate
2
:
AND gate
3
:
X OR operation
4
:
NOT operation
3 : Which of the following Boolean expressions represents the OR operation?
1
:
AB
2
:
A + B
3
:
A
4
:
aob
4 : In a half –adder circuit, the carry is generated by which operation?
1
:
XOR operation
2
:
AND operation
3
:
OR operation
4
:
NOT operation
5 : What is the decimal equivalent of the binary number 1101?
1
:
11
2
:
12
3
:
13
4
:
14
6 : In digital system 0 represent:
1
:
Of
2
:
OFF
3
:
ON
4
:
All of these
7 : Digital system depends on?
1
:
1 1
2
:
0 0
3
:
1 0
4
:
None of these
8 : In digital system 1 represents:
1
:
OF
2
:
OFF
3
:
ON
4
:
All of these
9 : Bit stands for:
1
:
Binary digit
2
:
Binary integer
3
:
Binary value
4
:
Binary number
10 : What does ADC represent?
1
:
Analog digital conversion
2
:
Analog digital conversation
3
:
Analog digital convenient
4
:
All of these
11 : What does DAC represent?
1
:
Digital analog conversion
2
:
Analog digital conversation
3
:
Analog digital convenient
4
:
All of these
12 : Which signals are in discrete form?
1
:
Analog
2
:
Digital
3
:
Both a,b
4
:
None of these
13 : Which signals are in continuous form?
1
:
Analog
2
:
Digital
3
:
Both a,b
4
:
None of these
14 : Which one is the example of analog signal?
1
:
Sound wave
2
:
Binary
3
:
1 0
4
:
None of these
15 : Which one is the example of digital signal?
1
:
Sound wave
2
:
Binary
3
:
1 1
4
:
0 0
16 : The output of AND operation is 1 only when both inputs are?
1
:
0
2
:
1
3
:
1 0
4
:
0 0
17 : Basis arithmetic operation like addition subtraction are performed by?
1
:
ALU
2
:
CU
3
:
UDP
4
:
All of these
18 : ALU stand for?
1
:
Arithmetic & logic unit
2
:
Arithmetic & local unit
3
:
Arithmetic &legal unit
4
:
None of these
19 : CU stands for?
1
:
Control unit
2
:
Central unit
3
:
Circuitry unit
4
:
none of these
20 : Comparison of two or more value are performed in?
1
:
CU
2
:
LU
3
:
UDP
4
:
All of these
21 : In K-map K stands for?
1
:
Knowledge
2
:
Karnaugh
3
:
Both a,b
4
:
None of these
Chapter 3 : Digital system and logic design
Computer 9th MCQs || Ilam Ghar
Computer 9th
