When connected to a computer, a VOTRAX SC-01 phoneme synthesizer chip inside the Type-'N-Talk audibly reproduces text that has been typed or otherwise input into the computer. Rather than a stored vocabulary, it created its robotic-like speech from a set of rules that describe the English language and its nuances. Because most alphabetic letters in English have more than one phonetic value, the TNT used 64 synthetic phonemes in various combinations to create an unlimited vocabulary in English as well as many other languages. Because these vocabulary rules were capable of being inserted in user’s software programs, extra RAM or ROM was not required. Applications included computer-aided instruction in education, aids for the non-reading and verbally impaired population, audio alerts for a number of computer programs, and entertainment.