Discrete transistor computer8/13/2023 Other vendors, including Motorola and Philco, copied the Fairchild line under the generic name RTL. According to TI engineer Bob Bergman, on seeing the new planar structure “it was decided to catch up with Fairchild’s technology in six months.” The company announced its Series 51 DCTL family in November of that year. Although Texas Instruments (TI) emerged as the winner and is most closely associated with the product, the company was a relative late-comer to the market.įairchild Semiconductor, a division of Fairchild Camera and Instrument Corporation, introduced the first commercial family of monolithic ICs, a variant of direct coupled transistor logic (DCTL), under the trade name Micrologic at the IRE Show in New York in March 1961. The rise of TTL to dominate the IC logic business established a pattern familiar to observers of the semiconductor industry with its succession of DRAM, Microprocessor, and Flash “Wars.” Battles for supremacy for their products raged for years between all major suppliers on technical features, manufacturing cost, and marketing fronts. Introduced in the early 1960s, TTL found few applications in mainframe computers, the major semiconductor market segment of the time, but emerged in the 1970s as the preferred logic family for new and rapidly expanding opportunities in mini-computers, peripherals, industrial controls, test equipment, instrumentation, and logic support functions (often called “glue logic”) in microprocessor-based systems. Transistor Transistor Logic (TTL) is a digital integrated circuit (IC) technology so named because the input gating structure is performed by transistors rather than diodes, resistors and capacitors of earlier logic switches.
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