On September 12, 1958, Mark Shepherd witnessed the demonstration of the integrated circuit by Jack Kilby and what other individual?
Mark Shepherd (businessman) Mark Shepherd (January 18, 1923 – February 4, 2009) was the chairman and chief executive officer of Texas Instruments. He was in attendance at the demonstration of the integrated circuit by Jack Kilby on September 12, 1958.
John R. Wiegand John Richard Wiegand (born 1912, Germany) discovered the Wiegand effect, a physical phenomenon in which a special wire, called a "Wiegand wire", produces small magnetic fields. The accompanying Wiegand reader detects the magnetic pulses produced by the two-domain wire embedded within, typically, plastic cards. There is also a Wiegand interface commonly used to transmit the data collected by a Wiegand sensor in a card reader. The Wiegand effect was first thought to be a commercially viable solution to better ignition systems for internal combustion engines. Echlin Corporation, an automotive parts manufacturer owned Sensor Engineering of Hamden, Connecticut in the 1970s. That application was displaced by the electronic ignition system.