Texas InstrumentsTexas Instruments, better known in the electronics industry as TI, is a company based in Dallas, Texas, renowned for developing and commercializing semiconductor and computer technology. TI is a major manufacturer of transistors and integrated circuits. The integrated circuit was invented by Jack Kilby of TI in 1958. The 7400 series of transistor-transistor logic (TTL) chips, developed by TI in the 1960s, popularized the use of integrated circuits in computer logic, and is in widespread use to this day. The TI-30 was one of the most popular early calculators.