Kent Smith's Shift Register

This was Kent Smith’s first integrated circuit that he ever designed and manufactured. It was created in 1966 while Kent was working at General Instruments in New York. It was a shift register designed with a slide rule and built with the rubylith process and NMOS technology. This shift register, and related derivatives, were used heavily by Kent and others at General Instruments to aid in the automatic testing of the “Pong on a Chip” and subsequent chips at General Instruments and later in Kent and Kay Smith’s startup of LSI Testing. Kent created this shift register since he needed more memory for the automatic testing process.