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ICT at key stage 3 (Year 7)
Unit 6: Control - input, process and output
Section 1: Activity 1
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Objectives |
| Children should learn: |
- that inputs can cause events to happen in a predetermined manner
- that counters can be used as controls
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Activities |
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Outcomes |
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Children: |
- Explain to the class the rules for the car park barrier. As a car approaches the barrier it will be detected and as soon as a ticket is taken the barrier is raised. The capacity of the car park is limited, so a count is kept of how many cars have entered. When the maximum number of spaces available have been filled, a full sign is lit up. As a car leaves the car park, the counter is reduced accordingly and the full sign (if lit) is turned off.
- Discuss with the class various input and output devices and where they may be found. As an introduction, a video that illustrates inputs and the resultant outputs could be used. This provides an opportunity for pupils to identify the main points from a video presentation.
- Revise simple cause and effect,
eg press a switch and sound an alarm. Allow pupils to experiment with altering the speed of a motor.
- Demonstrate how inputs are used to affect the value in counters.
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- describe inputs that can cause an event to happen
- use counters as controls
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Points to note |
- Other cause and effect items include ticket barriers, pelican crossings, doors that open automatically, bar code readers, car park barriers.
- Videos showing cause and effect could be used to demonstrate feedback. These could include,
eg automated factories, theme park rides, etc.
- After showing the video try to bring out that there is an input,
eg a light beam - the cause, and an output,
eg doors opening - the effect.
- Homework could involve pupils finding other examples of cause and effect.
- Show how to set up a counter (this can be another input), and how inputs can affect the value within a counter.
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This unit is divided into sections. Each section contains a sequence of
activities with related objectives and outcomes. You can view this unit by
moving through the sections or print/download the whole unit.
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