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Logic diagrams 2 - Answers

Q1. Study this logic diagram:

Q2c
Q2. There are 4 inputs (A, B, C and D) and 1 output (G).
Q3. There are 16 permutations of inputs.
Q4. 2 to the power of the number of inputs (4) = 16.
Q5. Complete the truth table below for the diagram.

A B C D E F G
0 0 0 0 0 0 0
0 0 0 1 0 1 0
0 0 1 0 0 1 0
0 0 1 1 0 1 0
0 1 0 0 1 0 0
0 1 0 1 1 1 1
0 1 1 0 1 1 1
0 1 1 1 1 1 1
1 0 0 0 1 0 0
1 0 0 1 1 1 1
1 0 1 0 1 1 1
1 0 1 1 1 1 1
1 1 0 0 1 0 0
1 1 0 1 1 1 1
1 1 1 0 1 1 1
1 1 1 1 1 1 1

Q6. Study this logic diagram;

Q1
Q7. There are 3 inputs (A, B and C) and 1 output (F).
Q8. There are 8 permutations of inputs.
Q9. 2 to the power of of the number of inputs (3) = 8.
Q10. Complete the truth table below for the diagram.

A B C D E F
0 0 0 0 0 1
0 0 1 0 0 1
0 1 0 1 0 1
0 1 1 1 1 0
1 0 0 1 0 1
1 0 1 1 1 0
1 1 0 1 0 1
1 1 1 1 1 0

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