Binary Lights











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Time Totals

Time Totals

Ten questions requiring a time calculation based on popular films. So far this activity has been accessed 7622 times and 244 people have earned a Transum Trophy for completing it.

Binary Lights

A Visual Aid

This interactive page provides suppport for those learning about binary numbers. It shows the ones and zeros as lights. A light turned on represents a one while a light turned off represents a zero. There are a number of ways to interact with the lights.

1. Click on a light to turn it on or off.

2. The button 'Headings' will show or hide the values of the lights.

3. The button 'Total'  will show or hide the decimal equivalent of the binary number.

4. The button 'Count' starts the lights showing a counting sequence.

5. The button 'Reset' sets the lights to zero.

6. The button 'Random' shows a random number between 1 and 255.

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.

Binary Finger Counting

Even young children know that it is possible to count to ten on your fingers but using binary you can count to over 1000.


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