The SR-50 was Texas Instruments' first scientific pocket calculator with trigonometric and logarithm functions. It enhanced their earlier SR-10 and SR-11 calculators, introduced in 1973, which had featured scientific notation, squares, square root, and reciprocals, but had no trig or log functions, and lacked other features. The SR-50 was introduced in 1974 and sold for US$170. It competed with the Hewlett-Packard HP-35.
SR-50 (1974)
Printed circuit board. Data code 035: 3rd week 1975
TI SR-52 on display at the Musée Bolo, EPFL, Lausanne.
Texas Instruments Incorporated (TI) is an American semiconductor company headquartered in Dallas, Texas that designs and manufactures semiconductors and various integrated circuits. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and education technology products including calculators, microcontrollers, and multi-core processors. The company holds 45,000 patents worldwide as of 2016.
Entrance to Texas Instruments North Campus facility in Dallas, Texas
Transistorized "logic" chip, an integrated circuit produced by TI
Texas Instruments and other brands of 7400 series TTL and CMOS logic
Texas Instruments Speak & Spell using a TMC0280 speech synthesizer
