How Does Binary Code Work

Short answer

Binary code represents data and instructions using only two states: 0 and 1. Computers use binary because electronic circuits naturally operate with on and off signals.

How it works

Each binary digit is a bit. Eight bits form a byte, which can represent 256 values. Binary encodes numbers, text via standards like ASCII and Unicode, and processor instructions.

Example

The decimal number 5 is 101 in binary. The letter 'A' is 01000001 in ASCII.

Why it matters

All software eventually compiles to binary. Understanding binary helps you grasp memory sizes, bitwise operations, and how computers process information at the hardware level.