About Binary Bulbs
Binary Bulbs shows how computers store everything with just on and off. Each light bulb is worth a number, and every bulb is worth double the one next to it: 1, 2, 4, 8, 16. Switching bulbs on adds their values together, so 16 + 4 + 2 makes 22. Three bulbs make every number up to 7, five bulbs every number up to 31.
The lessons build up from making numbers to reading lit bulbs, then writing them the computer way as 1s and 0s, such as 10110. Secret letters use a simple code where A is 1 and Z is 26, the same idea computers use to store text. Counting up shows how adding one makes bulbs flip and carry, just like 9 + 1 makes 10, and eight bulbs together make a byte worth up to 255.
The final lesson turns binary into pictures: each row of a 5 by 5 grid is a number, and lighting up the right squares reveals a heart, a house, a robot or a tree, just like pixels on a screen. Hints point to the next bulb to change. Stars unlock new bulb colours, and finished pictures go into a gallery.
Best for ages 7+
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