IBM's smallest computer at the time was the popular IBM 650, a fixed word length decimal machine that also used drum memory.

A checksum of a message is a modular arithmetic sum of message code words of a fixed word length (e.g., byte values).

MegPegCalc is an equation calculator that allows you to write complex equations, assign results to variables, execute multiple equations using script files, and simulate fixed word length effects of fixed point integer micro processors.

A typical CAPP might consist of an array of content-addressable memory of fixed word length, a sequential instruction store, and a general purpose computer of the Von Neumann architecture that is used to interface peripherals.

Several of the earliest computers (and a few modern as well) used BCD rather than plain binary, typically having a word size of 10 or 12 decimal digits, and some early decimal computers had no fixed word length at all.