Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Consider the following statements:1. When a M...
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Consider the following statements:
1. When a MUX is used to implement a logic function, the logic variables are applied to the MUX’s data inputs.
2. The circuit for a DEMUX is basically the same as that for a decoder.Of these:
- a)statement-1 is correct while 2 is false,
- b)both the statements are correct.
- c)statement-1 is false while 2 is correct.
- d)both the statements are false.
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Consider the following statements:1. When a MUX is used to implement a...
When a MUX is used to implement a logic function, the logic variables are applied to the MUX's select or control input.
For an example, if we want to implement a NOT gate using a 2 x 1 MUX, then the circuit will be represented as shown below:
For an example, if we want to implement a NOT gate using a 2 x 1 MUX, then the circuit will be represented as shown below:
Hence, statement-1 is not correct.
Statement-2 is correct because the internal circuit for a DEMUX (data distributor) and a decoder are basically same.
Most Upvoted Answer
Consider the following statements:1. When a MUX is used to implement a...
Statement Analysis:
Statement 1: When a MUX is used to implement a logic function, the logic variables are applied to the MUX’s data inputs.
- This statement is correct. In a Multiplexer (MUX), the selection lines are used to choose which input line is connected to the output. The data inputs of the MUX are where the logic variables are applied.
Statement 2: The circuit for a DEMUX is basically the same as that for a decoder.
- This statement is false. While both a Demultiplexer (DEMUX) and a decoder are used in digital electronics, they serve different functions. A decoder is used to convert coded inputs into coded outputs, while a DEMUX is used to route a single input to multiple outputs based on the control signal.
Explanation:
- The MUX is a digital circuit that can be used to implement any logic function by applying the appropriate input values to the data inputs and using the selection lines to choose the desired input.
- On the other hand, a DEMUX takes a single input and routes it to one of many possible output lines based on the control signal. It is essentially the reverse of a MUX.
- A decoder, on the other hand, is used to convert coded inputs into coded outputs. It is typically used in applications such as memory addressing and data demultiplexing.
Conclusion:
- Statement 1 is correct as the logic variables are indeed applied to the MUX's data inputs.
- Statement 2 is false as the circuit for a DEMUX is not the same as that for a decoder.
Statement 1: When a MUX is used to implement a logic function, the logic variables are applied to the MUX’s data inputs.
- This statement is correct. In a Multiplexer (MUX), the selection lines are used to choose which input line is connected to the output. The data inputs of the MUX are where the logic variables are applied.
Statement 2: The circuit for a DEMUX is basically the same as that for a decoder.
- This statement is false. While both a Demultiplexer (DEMUX) and a decoder are used in digital electronics, they serve different functions. A decoder is used to convert coded inputs into coded outputs, while a DEMUX is used to route a single input to multiple outputs based on the control signal.
Explanation:
- The MUX is a digital circuit that can be used to implement any logic function by applying the appropriate input values to the data inputs and using the selection lines to choose the desired input.
- On the other hand, a DEMUX takes a single input and routes it to one of many possible output lines based on the control signal. It is essentially the reverse of a MUX.
- A decoder, on the other hand, is used to convert coded inputs into coded outputs. It is typically used in applications such as memory addressing and data demultiplexing.
Conclusion:
- Statement 1 is correct as the logic variables are indeed applied to the MUX's data inputs.
- Statement 2 is false as the circuit for a DEMUX is not the same as that for a decoder.
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Consider the following statements:1. When a MUX is used to implement a logic function, the logic variables are applied to the MUX’s data inputs.2. The circuit for a DEMUX is basically the same as that for a decoder.Of these:a)statement-1 is correct while 2 is false,b)both the statements are correct.c)statement-1 is false while 2 is correct.d)both the statements are false.Correct answer is option 'C'. Can you explain this answer?
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