The acronym describes a processing precept the place the primary merchandise to enter a queue, buffer, or stack is the primary merchandise to exit. This technique is analogous to a bodily queue, akin to people ready in line; the particular person on the entrance of the road is the primary to be served. In computing, this may apply to information buildings, scheduling algorithms, or digital circuits. For example, in a print queue, paperwork are sometimes printed within the order they had been submitted.
This strategy affords a number of advantages, together with simplicity of implementation and equity in processing. It ensures that no factor is indefinitely delayed or starved of assets, selling equitable distribution. Traditionally, this precept has been elementary in managing information movement and useful resource allocation throughout varied computing and engineering disciplines, contributing to predictable system habits and lowered complexity.