How can we use the X-NOR gate as an inverter?

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DFCCIL Executive S&T 29 Sept 2021 Official Paper
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  1. By connecting two input terminals to logic 1 and feeding the signal to be inverted to the remaining channel
  2. By connecting one input terminal to logic 0 and feeding the signal to be inverted to the other terminal
  3. By tying all input terminal to logic 0 and feeding the system to be inverted to the other terminal
  4. By tying all but one input terminal to logic 1 and feeding the signal to be inverted to the remaining terminal

Answer (Detailed Solution Below)

Option 2 : By connecting one input terminal to logic 0 and feeding the signal to be inverted to the other terminal
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Detailed Solution

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For two input any gate one of the input can be used as control input and depending on output according to control input the gates can be used for different applications.

Example in XNOR gate, if one of the input is treated as control input, say  M  we observe that if M = 0,  output,  Y = A̅ 

means it act as inverter whereas when control input, M = 1, 

output, Y = A  means output just follow the input.

F1 Nakshatra Madhuri 07.12.2021 D4

F1 Nakshatra Madhuri 07.12.2021 D5

If control input,

M = 0, Y - \(\rm \bar{A}\) 

If M = 1, Y = A 

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