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.
Texas Instruments
TI has the largest market share in the analog semiconductor industry which has an estimated market TAM exceeding US$37 billion.On April 4, 2011, Texas Instruments announced that it had agreed to buy National Semiconductor for $6.5 billion in cash. Texas Instruments would pay $25 per share of National Semiconductor stock. It was an 80% premium over the share price of $14.07 as of April 4, 2011 close. The deal made Texas Instruments the world's largest maker of analog technology components.
The companies formally merged on September 23, 2011.