![]() Toward the end of the 1930s, Geophysical Service began to change its business focus because of the erratic nature of the oil exploration business. Erik Jonsson, a mechanical engineer, to head it. When Karcher and McDermott opened a research and equipment manufacturing office in Newark, New Jersey -to keep their research and their seismography equipment operations out of view of competitors -they hired J. The technique, reflection seismology, used underground sound waves to find and map those areas most likely to yield oil. Headquartered in Dallas, Geophysical Service used a technique for oil exploration developed by Karcher. ![]() Texas Instruments traces it roots to Geophysical Service, a petroleum-exploration firm founded in 1930 by Dr. It was a TI engineer who developed the first semiconductor integrated circuit in 1958, and TI ’s semiconductor chips helped fuel the modern electronics revolution. TI was one of the first companies to manufacture transistors, and it introduced the first commercial silicon transistors. The history of Texas Instruments (TI) is the history of the American electronics industry. ![]() Stock Exchange: New York London Switzerland ![]() Incorporated: 1930 as Geophysical Service
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