Learn Bits

See how numbers become binary, then compare their bits one position at a time.

Click a bit in row A or B to turn it on or off. Green means 1 (ON); gray means 0 (OFF).

Why these numbers?

Checking the result in C

Reading binary

Each position has a value: 8, 4, 2, 1 for four bits. Add a position's value only when its bit is 1. For example, 1101 means 8 + 4 + 1 = 13.

AND (&): both bits must be 1.
OR (|): at least one bit must be 1.

This learning calculator accepts unsigned whole numbers only. It runs entirely in your browser; nothing is uploaded.