Sign In

Computer Science for IGCSE & O level - Boolean Logic (Section 13)

1
What is the value of NOT(0) in the context of logic gates?
Answer
(B)
1
2
What is the use of a truth table?
Answer
(B)
To determine the outputs of logic gates for all possible input combinations.
3
Which logic gate's output is 1 only if all its inputs are 1?
Answer
(A)
AND
4
What is the primary function of a truth table?
Answer
(C)
To display the output for every combination of inputs.
5
What is the output of a NAND gate when the inputs are A = 1, B = 0?
Answer
(B)
1
6
What is the output of a 2-input XOR gate if the inputs are 0 and 1?
Answer
(B)
1
7
Which gate's output is HIGH only if all inputs are HIGH?
Answer
(A)
AND gate
8
Which of these is NOT a type of logic gate?
Answer
(D)
XNOR
9
Which gate is the inverse of the AND gate?
Answer
(B)
NAND gate
10
Which of the following expressions correctly represents a NAND gate?
Answer
(A)
NOT(A AND B)
11
In the context of digital logic, what do the inputs to a logic gate represent?
Answer
(D)
All of the above
12
In a half adder, what is the 'Sum' output representing?
Answer
(B)
The result of the addition of input bits
13
Which of the following is an application of logic gates?
Answer
A
B
C
14
What type of logic gate is the inverse of an AND gate?
Answer
(B)
NAND gate