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WorksheetsBinary Systems, Boolean Algebra and Logic Gates
Total questions: 20
Worksheet time: 10mins
The binary equivalent of decimal number 13 is:
1100
1110
1101
1011
Which of the following represents the hexadecimal number ‘A’?
10
11
12
13
Convert (1011)_2 to decimal:
10
11
13
15
Which is the 1’s complement of (01011001)_2?
10100111
01011000
10100110
11111111
Which of the following is an example of a non-weighted code?
BCD
Excess-3
Gray code
Octal code
Which code is used for error detection in digital systems?
Gray code
Parity bit
ASCII code
BCD
In Binary Coded Decimal (BCD), decimal 9 is represented as:
1001
1001
1010
1100
Which of the following is NOT a basic logic gate?
AND
OR
NOT
XNOR
The NOT gate is also known as a:
Buffer
Inverter
Repeater
Adder
Which gate gives a HIGH output only when all inputs are LOW?
AND
OR
XOR
NOR
Which of the following is the Identity Law in Boolean Algebra?
A + 0 = A
A + A = A
A + A’ = 1
A · 1 = 1
De Morgan’s Theorem: (A·B)’ = ?
A + B
A’ + B’
A’ + B’
A’·B’
Which of the following expressions is in canonical SOP form?
A + BC
A’B’C + AB’C’
A(A + B)
AB + C
Which of the following is a minterm of three variables A, B, C?
A + B + C
A · B
A’B’C
AB + C
How many minterms are possible with 4 variables?
8
16
32
64
The logic gate that outputs 1 only if an odd number of inputs are 1 is:
NOR
NAND
XOR
AND
Which of the following gates is universal?
OR
NAND
XOR
NOT
The output of an OR gate is LOW when all inputs are:
0
1
Equal
Don’t care
In Boolean algebra, the operation A + A is equal to:
0
A
A’
1
Boolean algebra is primarily used in:
Arithmetic computation
Programming languages
Digital circuits
Statistical analysis
