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An introduction to NOT gates - Answers

Q1. A NOT gate has 1 input and 1 output.
Q2. There are 2 to the power 1 = 2 permutations of inputs.
Q3. 2 NOT gates have been used in this diagram.

NOT2c
Q4. Here is the truth table.

A B C
0 1 0
1 0 1

Q5. Study this diagram:

NOT3c
There are 2 inputs, A and B. There are 2 to the power 2 = 4 possible permutations of inputs.
Q6. Complete the truth table below. 

A B C D
0 0 0 1
0 1 0 1
1 0 0 1
1 1 1 0

Q7. This is a NAND gate. It is made up of an AND gate with a little circle on the right hand side.

NOT5c
Q8. Study this diagram:

NOT4c
There are 2 inputs, A and B. There are 2 to the power 2 = 4 possible permutations of inputs.
Q9. Complete the truth table below. 

A B C D
0 0 0 1
0 1 1 0
1 0 1 0
1 1 1 0

Q10. This is a NOR gate. It is made up of an OR gate with a little circle on the right hand side.

NOT6c

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