Name: _____________________
Component Identification: Digital
Introduction
In this activity you will investigate both combinational and sequential logic gates. You will be
asked to simulate simple circuits using basic logic gates. You will then complete a truth table
for each logic gate based on the outputs generated from your simulation. The name of many of
the fundamental logic gates in digital electronics are based on the logic output from the gate.
From analysis of a truth table, could you determine the name and understand function of the
gate?
Equipment

Pencil
Procedure
Using the Circuit Design Software (Fusion 360), enter the circuit shown for each gate to
confirm the truth table.
Combinational Logic
1) Use a switch for the input X and a probe for the output Z.
Toggle the switch to complete the truth table shown.
X
Z
0
1
1
0
From analysis of the truth table, why do you think this is called an “INVERTER” gate?
2) Use switches for the inputs X & Y and a probe for the output Z.
Toggle the switches to complete the truth table shown.
X Y Z
0 0 0
0 1 0
1 0 0
1 1 1
From analysis of the truth table, why do you think this is called an “AND” gate?
3) Use switches for the inputs X & Y and a probe for the output Z.
Toggle the switches to complete the truth table shown.
From analysis of the truth table, why do you think this is called a “NAND” gate? (NOT AND)
4) Use switches for the inputs X & Y and a probe for the output Z.
Toggle the switches to complete the truth table shown.
X Y Z
0 0
0 1
1 0
1 1
From analysis of the truth table, why do you think this is called an “OR” gate?
5) Use switches for the inputs X & Y and a probe for the output Z.
Toggle the switches to complete the truth table shown.
X Y Z
0 0
0 1
1 0
1 1
From analysis of the truth table, why do you think this is called a “NOR” gate? (NOT OR)
6) Use switches for the inputs X & Y and a probe for the output Z.
Toggle the switches to complete the truth table shown.
X Y Z
0 0
0 1
1 0
1 1
From analysis of the truth table, why do you think this is called an “XOR” gate?
(EXCLUSIVE OR)