Four Letter Words is an installation made by Rob Seward.
It consists of four units, each capable of displaying all 26 letters of the alphabet with an arrangement of fluorescent lights. The piece displays an algorithmically generated word sequence, derived from a word association database developed by the University of South Florida between 1976 and 1998. The algorithms take into account word meaning, rhyme, letter sequencing, and association.
I just love to see the mechanical details.
found at Rhizome