Alternative Logic Gates - SS2 ICT Past Questions and Answers - page 2
How many inputs does a NOT gate typically have?
Four
One
Two
Three
The output of a NAND gate is the logical NOT of the output of which gate?
OR gate
AND gate
XOR gate
NOT gate
Which gate produces a 0 output when the number of input 1s is even?
OR gate
XOR gate
AND gate
XNOR gate
Which gate has a symbol that resembles an OR gate followed by a NOT gate?
NAND gate
NOR gate
XOR gate
XNOR gate
What is the output of a NOT gate when its input is 0?
0
1
NOR gate
NAND gate
Describe the behavior of an XOR gate and provide an example of its output for different input combinations.
An XOR gate produces a 1 output when the number of input 1s is odd, and it produces a 0 output when the number of input 1s is even. For example, if we have inputs A = 0 and B = 1, the output would be 1 since there's an odd number of input 1s.
How does a NOR gate differ from a NOT gate in terms of functionality and symbol representation?
A NOR gate is a combination of an OR gate followed by a NOT gate. It produces a 1 output only when all inputs are 0. On the other hand, a NOT gate simply produces the logical complement of its input. The NOR gate symbol is ⊽, while the NOT gate symbol is ¬ or /.
Explain the concept of an XNOR gate and how it can be used to determine parity.
An XNOR gate produces a 1 output when the number of input 1s is even, and it produces a 0 output when the number of input 1s is odd. It's often used to determine parity, where an even number of 1s corresponds to an output of 1 (indicating even parity).
Provide an example of a real-world application where NAND gates are commonly used.
NAND gates are commonly used in memory circuits, digital-to-analog converters, and microcontrollers due to their ability to generate all other basic logic gates when combined.
Discuss the significance of using alternative logic gates beyond basic AND, OR, and NOT gates in digital circuit design.
Alternative logic gates enable the creation of more complex logical operations and functions beyond the basic operations of AND, OR, and NOT. They are crucial for designing intricate digital circuits that can perform various tasks, from simple calculations to complex decision-making processes.