S3 INNOVATIONELECTRONICS

LESSON TITLE: ELECTRONICS

Learning Intention:To understand when to use different types of logic gates

Activity: Building own circuits using logic gates

Success Criteria:All – Understand when to use NOT, AND and OR gates

Most – Be able to use more than one gate at a time

Some – Build a logic table when using more than one logic gate

OR gate

• An OR gate has two inputs and one output.

• An OR gate requires either one or both inputs to be ON to be ON.

Input 1 Input 2 Output

0 0 0

0 1 1

1 0 1

1 1 1

ExampleCollect a circuit board, connect wires as

shown.

What could this circuit be used for?

Process Devices (Gates) I nputs

NOT

Outputs

K E

AND L

F

G

OR M

H

J

P Relay switch

B Light sensor

C Temperature Sensor

N Buzzer

R Lamp D

Push Switch

A Slide Switch

1

0

Inputs

We have only used the switches so far.

What happens when you cover the light sensor?

What happens when you cover the temperature sensor?

Challenges

Your teacher will hand out a list of jobs for you to complete using the logic boards.

Work through as many as possible. Make sure to make a block diagram as well as truth table for each job.