famous AY-3-8910/11/12/14 series of sound chips, the AY-3-85xx, 86xx, 87xx series of game chips and a single-chip speech synthesizer, the SP0256 Narrator. A version of the SP0256 appeared in Mattel's Intellivoice. The popular SP0256-AL2 variant came with a set of allophones built in. In 1965, Frank Wanlass moved to General Instrument Microelectronics Division in New York. Wanlass and other GI engineers promoted four-phase logic throughout the industry. J. L. Seely, manager of MOS Operations at General Instrument Microelectronics Division, also wrote about four-phase logic in late 1967. See also GTE mainStreet General Instrument (disambiguation) Morris Chang References Private equity portfolio companies Semiconductor companies of the United States