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Free computer science video lessons

Algorithms and flowcharts with Flowgorithm, programming, Excel and the Office suite, hardware and software, number systems and conversions.

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Decimal-to-binary conversion

Video lesson

Watch the steps

Watch the method explained step by step, then use the worksheet to practise.

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Free resources

Binary–decimal conversion guide

A guided method, a complete example, exercises and quick answers. Download and print it.

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Website tutorials

Learn how to use Idee in comune: join with a code and contribute to collections managed by Fabio.

Tutorials and guide