# Worksheet: NOR Gates

In this worksheet, we will practice determining the input and output of NOR gates in logic circuits and completing truth tables for NOR gates.

Q1:

The diagram shows 2 NOR gates connected as part of a logic circuit. Use a truth table to work out what type of logic gate this arrangement is equivalent to. • AAn XOR gate
• BAn OR gate
• CAn AND gate
• DA NOT gate
• EA NOR gate

Q2:

The diagram shows 3 NOR gates, where the outputs of the first 2 NOR gates are the inputs to the third. If input A is 1, input B is 0, input C is 1, and input D is 1, what is the output? Q3:

The diagram shows a NOR gate. If input is 0 and input is 1, what will the output be? Q4:

The diagram shows a NOR gate. If input A is 0 and the output is 1, what must input B be? Q5:

Which pair of logic gates shown in the diagram produces the same output as a NOR gate? • A(a)
• B(b)
• CNone
• D(d)
• E(c)

Q6:

The truth table shows the output of a NOR gate for various combinations of inputs.

 NOR Gate Input A Input B Output 0 0 𝑝 0 1 𝑞 1 0 0 1 1 0

What is the value of in the table?

What is the value of in the table?

Q7:

The diagram shows the circuit symbols for four logic gates. Which symbol represents a NOR gate? • A(c)
• B(d)
• CNone
• D(b)
• E(a)