Strange word sizes were used in very early machines and special purpose machines, especially early military computers. If you look hard enough you can probably find any size, especially in the range 8-40. Here are some examples off the top of my head, but I probably have some of them wrong: 19 Bendix G15, depending how you count 22 Packard Bell 250, depending how you count (otherwise 23-24) 40 IAS, SWAC <- Here's the justification for the joke! 48 Burroughs 5500 etc. 60 CDC 6600, Cyber series 64, 128 IBM Stretch You get even more if you include decimal machines. (Is it fair to list the 4004 above?) Paul