Unit 5E Controlling Devices

1
Unit 5E Controlling Devices

• QCA ICT Year 5

2
Lesson One

• PowerPoint presentation for main teaching input.
• Demonstration of flowcharts for devices
• Car park barrier
• Zebra crossing
• Street lights
• Other examples of controllable devices to be
  printed out and used in activity.

3
Car Park Barrier
Take the ticket
Barrier goes up
Wait for car to go through
Barrier goes down
4
Zebra Crossing
Light goes on
Stays on for 2 seconds
Why is this last arrow important?
Light goes off
Stays off for 2 seconds
5
Street Lights
Light sensor checks to see if it is light or dark
If it is dark then
If it is light then
Light goes on
Light goes off
6

• How can you control a TV using the remote?
• How does the fridge light come on when you open
  the door?
• How does a lift know where to go?
• How do the traffic lights know when to change to
  red?
• How does a level crossing know when a train is
  coming?
• What other devices could you control?

7
How would a Pelican Crossing work?
8
What has to happen to control a lift?
9
How does the light turn on when you open a
fridge door?
10
How does a TV remote control change channels and
change the volume too?
11
How does a level crossing know when the train is
coming?