Input and output — CCA-F Exam Prep

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L0.21|Input and output
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This is you
A person holding their phone, speaking to Siri. A speech bubble says 'What's the weather?' A response bubble from the phone says '72 degrees and sunny.' Minimal, clean illustration on white background.

You ask Siri "What's the weather?" That's input.

Siri says "72 degrees and sunny." That's output.

Every interaction with every computer is this: something goes in, something comes out. You type a search query — input. Google shows results — output. You tap a photo — input. Instagram applies a filter — output.

Every program in existence does one thing: transforms input into output.