Computer Science for IGCSE & O level - Boolean Logic (Section 6)
1
What logic gate's output is 'HIGH' if *any* of its inputs is HIGH?
პასუხი
(B)
OR gate
2
Which of the following represents the correct order of operation to implement Y = A OR (B AND C)?
პასუხი
(B)
B AND C then OR with A.
3
Which operation does the OR gate perform?
პასუხი
(A)
Addition
4
In the engine management system, what logic operation is implemented to determine whether to activate the warning light?
პასუხი
(A)
AND and OR
5
In Boolean algebra, which symbol represents the AND operation?
პასუხი
(B)
*
6
Which of these expressions is simplified to A?
პასუხი
(D)
A . 1
7
If a logic circuit is designed to output 1 when either A is 1, B is 1, or C is 1, which of the following expressions represents the output?
პასუხი
(B)
A OR B OR C
8
In the Boolean expression, what represents the 'inversion' operation?
პასუხი
(C)
'
9
What are the components of a basic AND gate?
პასუხი
(A)
One or more inputs and one output.
10
In the context of digital logic, what does the term 'truth table' describe?
პასუხი
(C)
A table showing all possible input combinations and their corresponding output values
11
What does the term 'boolean algebra' deal with?
პასუხი
(B)
Binary values and logical operations
12
What logic gate is represented by the expression (A.B)'?
პასუხი
(A)
NAND
13
If the inputs to a NOR gate are A=1 and B=0, what is the output?
პასუხი
(A)
0
14
How many different combinations of input values are possible for a 3-input logic gate?
პასუხი
(D)
8
15
In a 2-input OR gate, what is the output if one input is 1 and the other is 0?
პასუხი
(B)
1
16
If A = 1 and B = 1, then the output of an AND gate is:
პასუხი
(B)
1
17
In the context of the manufacturing system for plastic pipes, if the pressure is 4 bar and the temperature is 300 degrees Celsius, will the alarm sound?
პასუხი
(B)
No
18
In digital logic, the term 'inversion' is most closely associated with which gate?
პასუხი
(C)
NOT
19
What type of gate is formed by inverting the output of an AND gate?
პასუხი
(B)
NAND gate
20
If the inputs to an XOR gate are A=1 and B=0, the output is:
პასუხი
(B)
1
21
If A=0, what is the result of NOT A?
პასუხი
(B)
1
22
Which gate is used to represent A OR B?
პასუხი
(B)
OR gate
23
Which of the following gates is the complement of the AND gate?
პასუხი
(B)
NAND
24
What function is performed by a NAND gate?
პასუხი
(A)
AND followed by NOT
25
What is the purpose of a logic circuit?
პასუხი
(B)
To perform calculations.
26
What is the output of an OR gate if all its inputs are LOW (0)?
პასუხი
(A)
0
27
The output of a NOR gate is high (1) only when:
პასუხი
(A)
All inputs are low (0)
28
What is the result of the NOT operation on the input 1?
პასუხი
(A)
0
29
Which of the following statements is true for an XOR gate?
პასუხი
(C)
The output is HIGH if the inputs are different
30
What is the output of an XOR gate if both inputs are 0?
პასუხი
(A)
0
31
Given the expression (A + B) · C, what is the final gate implemented in this expression?
პასუხი
(B)
AND
32
If A = 0 and B = 1, then what is the output of a NAND gate?
პასუხი
(B)
1
33
Which gate is the inverse of an AND gate?
პასუხი
(C)
NAND
34
What is the function performed by the OR gate?
პასუხი
(B)
Logical OR
35
How can a NAND gate be implemented using an AND gate and a NOT gate?
პასუხი
(A)
Connect the output of the AND gate to the input of the NOT gate.
36
If A = 0, B = 1, and C = 0. What is the output of (A OR B) AND C?
პასუხი
(A)
0
37
What is the output of an OR gate with inputs A=1 and B=1?
პასუხი
(B)
1
38
Which type of gate is functionally equivalent to an OR gate followed by a NOT gate?
პასუხი
(B)
NOR gate
39
In a half adder, which outputs are available?
პასუხი
A
B
40
In an AND gate with two inputs, the output is:
პასუხი
(A)
HIGH when both inputs are HIGH.
41
The symbol for the NOT operation in Boolean algebra is:
პასუხი
(C)
!
42
Which gate's output will be LOW (0) if at least one input is HIGH (1)?
პასუხი
(B)
NOR
43
Which of the following is the correct Boolean expression for a 2-input NAND gate?
პასუხი
(B)
NOT(A * B)
44
What is the output of an AND gate with inputs A=1, B=0, and C=1?
პასუხი
(A)
0
45
What does the term 'fan-out' refer to in digital logic?
პასუხი
(C)
The maximum number of gate inputs that the output of a gate can drive
46
Which gate's output is LOW if at least one input is HIGH?
პასუხი
(B)
NOR
47
The output of an OR gate is TRUE (1) when:
პასუხი
(C)
Any one or more inputs are TRUE (1).
48
Which gate inverts the input signal?
პასუხი
(C)
NOT
49
What does 'NAND' stand for?
პასუხი
(A)
NOT AND
50
Which gate has the truth table outputting HIGH when any of the inputs are HIGH?
