1. Engineering Science
Systems and Control

2. Universal Systems Diagram
In order to under stand how things work Engineers break them down to make them simpler to understand. This is called using the systems approach.
Universal Systems Diagram
Input
Process
Output

3. Universal Diagram of a Radio
Radio Waves
Sound
Radio

4. Task
Now complete Task 1.

5. E&L Boards
To help engineers understand how a system works we sometimes use electronic boards of computer software to gain a better understanding.

6. Input Boards Light Sensor Temperature Sensor Moisture Sensor
Push Switch
Magnetic Switch Unit
Input Voltage Unit
Analogue signals can be any value They can be completely ON or OFF but can also be half or three quarters on (Think of a dimmer switch on a light)

7. Process Boards Transducer Driver Latch Inverter (NOT) Gate AND Gate
Comparator
OR Gate
NAND Gate
NOR Gate

8. Output Boards
Bulb
Buzzer
Motor
Relay
Solenoid

9. Universal Diagram of a Radio
Radio Waves
Sound
Radio

10. Universal sub-system diagram of a radio
Radio Waves
Sound
Aerial
Amplifier
Loudspeaker

11. Task Now complete Task 2 and 3.
Remember to check with your teacher before moving on and to look after the equipment that you are using.