Texas Instruments
In 1930, J. Clarence Karcher and Eugene McDermott founded Geophysical Service, an early provider of seismic exploration services to the petroleum industry. In 1939, the company reorganized as Coronado Corp., an oil company with Geophysical Service Inc (GSI), now as a subsidiary. On December 6, 1941, McDermott along with three other GSI employees, J. Erik Jonsson, Cecil H. Green, and H.B. Peacock purchased GSI. During World War II, GSI expanded their services to include electronics for the U.S. Army, Signal Corps, and the U.S. Navy. In 1951, the company changed its name to Texas Instruments, with GSI becoming a wholly owned subsidiary of the new company.
Invention of the integrated circuit
The resistor-transistor logic of first ICs by Fairchild and Texas Instruments was vulnerable to electromagnetic interference, and therefore in 1964 both companies replaced it by the diode-transistor logic [91]. Signetics released the diode-transistor family Utilogic back in 1962, but fell behind Fairchild and Texas Instruments with the expansion of production. Fairchild was the leader in the number of ICs sold in 1961–1965, but Texas Instruments was ahead in the revenue: 32% of the IC market in 1964 compared to 18% of Fairchild.