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Lesson 2 of 16
  • Year 10

Input components

I can identify and use different input components in control systems.

Lesson 2 of 16
New
New
  • Year 10

Input components

I can identify and use different input components in control systems.

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Lesson details

Key learning points

  1. A switch controls the flow of current in a circuit or system by making or breaking a circuit.
  2. Input components may sense a specific condition such as light, moisture or temperature
  3. Actuators are used to create a mechanical action in various different systems.
  4. Sensors are input components that convert physical properties of the environment into digital signals for processing.
  5. Sensors can be on-board or off-board components.

Keywords

  • Switch - controls the flow of current by making or breaking a circuit

  • Sensors - a component that can emit a signal depending on the environmental conditions

  • Flowchart - a diagram that shows the steps of a process from beginning to end

  • Actuator - a component that converts energy or a control signal into physical movement or action

  • Pseudocode - a way of writing out computer program instructions using plain English

Common misconception

Systems only use one input.

Systems often have multiple inputs. These can be switches and sensors.


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Equipment

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Licence

This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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Prior knowledge starter quiz

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6 Questions

Q1.
Button A and button B on a micro:bit are examples of ...

Correct answer: onboard inputs.
onboard outputs.
offboard inputs.
offboard outputs

Q2.
When designing a control system it is important to analyse the .

Correct Answer: Design brief

Q3.
Which aspect of the systems approach would measuring the temperature in a greenhouse be?

Correct Answer: input

Q4.
When planning a control system we can use ...

a pie chart.
Correct answer: a flow chart.
a map.
a pattern.
a template.

Q5.
What is feedback in a control system?

Correct answer: a signal that is sent back in a loop, depending upon a condition
a signal that is sent back to the start
a review of performance
a signal that moves around the system

Q6.
Which of these are output components?

Correct answer: LED
microphone
Correct answer: speaker
light sensor

Assessment exit quiz

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4 Questions

Q1.
Inputs can be categorised as switches or .

Correct Answer: sensors

Q2.
Switches can or break a circuit.

Correct Answer: make

Q3.
Match the onboard micro:bit sensor to the definition.

Correct Answer:microphone,measures sound levels

measures sound levels

Correct Answer:temperature sensor,measures how hot or cold it is

measures how hot or cold it is

Correct Answer:accelerometer,measures forces

measures forces

Correct Answer:compass,measures magnetic fields

measures magnetic fields

Correct Answer:light sensor,measures light levels

measures light levels

Q4.
Which code blocks can give you two output options after measuring an input?

Correct answer: if and else
if or else
if not else