In computing and in systems theory, FIFO is an acronym for first in, first out (the first in is the first out), a method for organizing the manipulation of a data structure (often, specifically a data buffer) where the oldest (first) entry, or “head” of the queue, is processed first.

(“FIFO (Computing and Electronics)” 2022)

Related: Last in, first out


“FIFO (Computing and Electronics).” 2022. Wikipedia, August.