Designing, creating and refining algorithms
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An automated greenhouse irrigation controller needs an algorithm designed to manage an auxiliary misting system.

The algorithm must:

  • Input the current greenhouse humidity (as a percentage, e.g. 45 for 45%) and the current temperature (in °C).
  • Decide if the auxiliary misting system should be activated: the system must turn on if the humidity is strictly below 35%, or if the temperature is strictly above 32°C and the humidity is strictly below 55%.
  • Output "Activate Misting" if the conditions are met, or "System Idle" if they are not.

Design the algorithm by drawing a flowchart. Use standard flowchart symbols (Terminator, Process, Decision, Input/Output).

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Designing, creating and refining algorithms Questions

Practise OCR GCSE Computer Science Designing, creating and refining algorithms with exam-style questions for GCSE Computer Science. 50 questions, matched to the OCR GCSE Computer Science (J277) specification and written in Component 01 and Component 02 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Designing, creating and refining algorithms Questions

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