17. An electronic system for identifying and resolving ambiguities in the selection of single character or two-character symbolic language words, comprising: a keyboard having a plurality of key indicia corresponding to selected features of graphic characters and adapted to produce an identifier representing a character to be typed; file means containing a first list of characters and a second list of permitted character pairings, said characters and pairings being listed in said file by index codes selectable by specified identifiers, whereby a selected identifier will call up the index codes and pairings of all characters having that identifier; first storage means for receiving the index codes and permitted pairings for the identifier of a first character to be typed; second storage means for receiving the index codes for the identifier of a second character in a two-character word to be typed; a matching network for matching the index codes stored in said first storage means with the index codes in said second storage means to produce a list of possible character pairs for a two-character word; selection storage means; means for connecting said selection storage means either to said first storage means to receive and store only the index codes in said first storage means for a single character or to said matching network to receive said list of possible pairs for a two-character word; a comparator connected to said selection storage means for comparing said list of permitted character pairings with said list of possible pairs; significant pair storage means to receive and store character pairs appearing in both said list of permitted pairings and said list of possible pairs; and selector means connected either to said selection storage means to resolve single character ambiguities or to said significant pair storage means to resolve two-character word ambiguities.
23. The apparatus of claim 17, wherein said selected features of graphic characters are peripheral stroke configurations thereof.