0️⃣1️⃣ Binary — How Computers Count

Computers only know two things: on (1) and off (0). Flip the switches and watch the number build. Each switch is worth double the one to its right. 8 switches count all the way to 255.

Binary

00000000

Decimal (normal number)

💡 Fun fact: 8 bits = 1 byte. The letter "A" is stored as 01000001 (that's 65). Every photo, song, and message is really just millions of these on/off switches.