Define robotics and identify a robot
Use the syllabus characteristics to distinguish robots from ordinary automated devices.
This sequence follows Cambridge IGCSE Computer Science 0478, 2026–2028 syllabus Version 6. It covers subject content sections 6.1–6.3 only. The separately published 2029–2031 syllabus is not mapped here. Practice is original, self-checked and does not award an official Cambridge grade. Full timed papers and human subject-teacher review remain outstanding.
Before you begin
- No programming language is required. Be comfortable with place value and multiplication; each lesson introduces the computer-science notation it uses.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
What branch includes designing, constructing and operating robots?
What you will learn
- Define robotics
- Identify a mechanical structure and electrical components
- Explain programmability
Robotics combines design and operation
Robotics is the branch of computer science concerned with the design, construction and operation of robots. A robot commonly has a mechanical structure or framework and electrical components such as sensors, microprocessors and actuators.
Apply and check the rule
A robot is programmable: its instructions can control how it senses or acts. Not every automated device is a robot. A simple timer may operate automatically but lack the broader programmable mechanical and electrical system characteristic of robotics.
Pause and explain
Which device most clearly meets the syllabus characteristics of a robot?
Worked example
A programmable warehouse arm has joints, sensors, a controller and motors. Which characteristics identify it as a robot?
Show the worked solution
- The arm has a mechanical framework.
- It includes sensors, a processor and motors that act as actuators.
- A program controls its actions.
Answer It has a mechanical structure, electrical sensing and control components, actuators, and programmable behaviour.
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Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Name the main structural and electrical features of a robot.
Give me a hint
Include how it senses, processes and acts.
Compare my reasoning
- It has a mechanical structure.
- It can include sensors, a microprocessor and actuators.
- It is programmable to control its behaviour.
A robot has a mechanical framework, electrical components such as sensors, microprocessors and actuators, and programmable behaviour.
Look for these in your work
- Structure
- Electrical components
- Programmable
A washing machine follows a timed cycle. Explain why “it is automatic” alone does not establish that it is a robot.
Give me a hint
Use the definition rather than everyday language.
Compare my reasoning
- Automatic operation alone does not show a robotic mechanical system.
- Check whether the device has the characteristics required by the syllabus.
- A simple timer may not have programmable robotic movement or sensing and actuation as a robot.
Automatic behaviour alone is not enough. The syllabus characterises robots by a programmable mechanical structure with electrical components such as sensors, a processor and actuators.
Look for these in your work
- Automatic distinguished
- Characteristics named
- Reasoning
A delivery robot can steer, avoid people and carry packages. Identify one component for each function and explain how the system acts as a robot.
Give me a hint
Connect sensing, processing and mechanical movement.
Compare my reasoning
- Distance sensors detect obstacles.
- A microprocessor uses sensor data and program rules to choose a route.
- Motor actuators steer and move the mechanical frame carrying the package.
Sensors detect obstacles, the processor follows programmed route rules, and motors move the robot's mechanical structure to deliver the package.
Look for these in your work
- Sensing
- Processing
- Actuation and purpose
Common mistakes
- Calling every automatic appliance a robot
- Forgetting the mechanical structure or programmability
What can you explain now?
Which feature is characteristic of a robot?
Compare with the explanation
A programmable mechanical system with electrical components
Robots combine a framework with sensing, processing and actuation.
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Make it stick
What combination of features distinguishes a programmable robot from a simple timer?
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.