lesson
What happens between input and output?
1 · Learn
An input sends data into a digital system. Processing means the system works on that data according to instructions. An output presents a result.
In a calculator, pressing 3 + 2 is input. The calculation is processing. Showing 5 is output. This model helps explain a system; it does not mean every device has exactly one input or output.
2 · Worked example
At a pretend ticket machine, choosing a ticket is input. The system uses the choice to find a price, then displays it as output.
3 · Your turn
In a drawing app, is moving the pointer an input or an output? What could be an output?
Check your answer
Moving the pointer is an input. The changed picture shown on the screen is an output.
4 · Apply your learning
Draw input, processing and output boxes for a safe familiar device. Add arrows and explain what information travels between them.
Adult guidance and safety
Use an adult-approved offline or school-managed application. Use invented data, original images and pretend identities. Paper models explain an idea but must be followed by suitable practical device work. Never enter real passwords or personal information in the working pad.
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