Why is binary important?

Computers operate in binary (0s and 1s). Every instruction, number, and character is ultimately stored in binary.

What is hexadecimal used for?

Hex is a compact way to represent binary. 1 hex digit = 4 binary digits. Used in colors (#FF0000), memory addresses, and programming.

Divide by 2 repeatedly, read remainders bottom to top. 13 → 1101.

Last Updated: April 13, 2026

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