# 14 - Past Paper Simulation -Boolean Logic(I) #2

1. Name the gate (1 mark)

2. Name the gate and explain what it does (2 marks)

3. Name the gate and explain what would be output if A and B were both inputs of 1? (2 marks)

4. State three possible advantages to having fewer gates in a complex logic circuit? (3 marks)

5. What gate is this a truth table for? (1 mark)

6. Analyse the truth table below. Can you fill in the blanks for A and B? (2 mark)
```Write your answer in the following format:
A = True
B = True```

7. Look carefully at the boolean expression for Q. Can you fill in the blanks for the missing value (1 mark)

8. One of the output values is incorrect. State the colour that contains the incorrect value (1 mark)

9. State the expression for this particular logic circuit. State it in terms of X and use the words themselves (e.g. AND, OR, NOT) for the gate names in the expression. (1 mark)

10. In this example we have started to fill in the outputs for the truth table. State which colour contains a value that is definitely incorrect (1 mark)

11. Assume that Q = NOT A. If the input for A is 0, what is Q?

12. If an OR gate receives two inputs of a 1 and 0, what would the output be? (1 mark)

13. A____________ shows how a logic circuit's output responds to various combinations of the inputs, using logic 1 for true and logic 0 for false (1 mark)

14. The world of electronics was initially dominated by analogue signals,that is, signals representing a continuous range of values. In _____ circuitry, however, there are only two states: on and off, also referred to as 1 and 0, respectively (1 mark)