Two bits is an older term used primarily in the United States to refer to the amount of 25 cents (see Bit (money)). While originally a significant amount of money, with inflation 25 cents has come to be worth little, leading to a change in the meaning of the term.

Two Bits
Two Bits: The Cultural Significance of Free Software
Two Bits : The Cultural Significance of Free Software / C.M. Kelty
Two Bits: The Cultural Significance of Free Software (review)
Two Bits: The Cultural Significance of Free Software
Two Bits: The Cultural Significance of Free Software by Christopher M. Kelty
Solitons Beyond Binary: Possibility of Fibre-Optic Transmission of Two Bits per Clock Period
Our Two Bits
Two bits per cell ROM
A novel PHINES flash memory cell with low power program/erase, small pitch, two-bits-per-cell for data storage applications