This font allows the creation of Celtic knotwork in many different levels of complexity. Upper case is white strands on black background, the same letter in lower case are black strands in white background.
While focusing on Boolean gates, this font also contains some other symbols used in electric diagrams.
Another font that allows the creation of Celtic knotwork. This one was designed to be somewhat simpler than Nodus Hibernicus FS.
Abakus FS, a font that allows ample abacus representation.
Eighteen segment display font, based on a model that was developed in the Soviet Union. Currently supports all ASCII characters, Cyrillic, and Greek.