Logic diagrams 2 - Answers
Q1. Study this logic diagram:
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;
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 |