Components of a control system and the advantages of computers over humans and visa versa.

1. Control – Lesson 1
Computer and Human Systems

2. Objectives & Outcomes
Objectives
1. To understand the 3 key parts of a control system.
2. They know the advantages of human and computer and human
control systems.
Outcomes
1. To list the Advantages and Disadvantages of computer and human
control Systems.
2. To Design a simple control system for an everyday task.

3. Looking Back At Control
You may have used control before in your Primary School
Do you remember the Turtle?
How did you make it work?

4. What makes up an information System
• Input
Where did the information come from? What Started it
• Process
What is done?
• Output
What was the end result of the system?

5. What is Control?
It is a simple set of instructions that are needed to
carry out a task!
Can you work out the instructions for these 3 Items:
• Washing Machine
• Kettle
• Lighthouse
Click here for processors sheet

6. Washing Machine
• Input
Washing Powder, Wash Programme
• Process
Match amount of
water, temperature to
programme
• Output
Clean Washing

7. Kettle
• Input
Cold Water, On Button
• Process
Heats the water to boiling
temperature
• Output
Boiling hot water

8. Lighthouse
• Input
Visibility
• Process
Is it Poor
• Output
Turn on the light and fog horn

9. What Type of Control?
Control Systems can be completed by human or
computer systems!
Open up the word document and list five advantages
of:
• Why Humans may be better at a task
•Why a Computer may be better at a task

10. What are the advantages of Human Control?
• The situation calls for judgements to be made relying on past
experience
• Unexpected factors may influence the process.
• The task is a one-off event.
• Creative thinking is needed.
• An element of skill is involved.

11. What are the advantages of Computer Control?
• Computers are faster, They don’t need sleep, or rest
• Computers are accurate at repeat tasks
• It is cheaper to use computers.
• The situation is too dangerous for people.
• People may get bored

12. Making your own Control System!
Making A Cup of Tea
• Think about the correct sequence you would need to make
a cup of tea
• Starting with turning on the tap
• Ending with drinking your tea
Remember break it down into simple instructions
Click here for making tea sheet

13. Next Lesson
Homework – Complete the making a cup of tea
control system for next lesson.
You will be looking at how to create Flowcharts and
the symbols that you use.
What each of the symbols mean!
See if you can match up the symbol with it’s purpose!
Flowchart Symbols