Bit stands for

A bit is short for binary digit, the smallest unit of data taking the value 0 or 1.

Binary information term is not the expansion of the word bit.

A binary tree is a data structure and unrelated to what bit stands for.

Bivariate theory is a statistics idea with no link to the abbreviation.

Eight bits together make one byte, the common unit for a character.

All digital storage and processing ultimately reduce to these binary bits.