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Digital Electronics
Combinational Circuits
Encoders and Decoders

Questions mapped to Encoders and Decoders under Combinational Circuits.

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Q#1 Combinational Circuits GATE EE 2008 (Set 1) MCQ +2 marks -0.66 marks

A 3 line to 8 line decoder, with active low outputs, is used to implement a 3-variable Boolean function as shown in the figure.

The simplified form of Boolean function F(A, B, C) Implemented in 'Product of Sum' form will be

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Q#2 Combinational Circuits GATE EE 1997 (Set 1) MCQ +2 marks -0.66 marks

A 3-input 2-output priority encoder has the following truth table where X’s indicate don’t care conditions. Realize the logic using NAND gates and inverters

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