The TI-30 is a scientific calculator manufactured by Texas Instruments, the first model of which was introduced in 1976. While the original TI-30 was discontinued in 1983 after several design revisions, TI maintains the TI-30 designation as a branding for its low and mid-range scientific calculators.
LED display digits of the original TI-30
Demonstration of the so-called "logarithm bug" that exists in some TI-30 models. In both cases, the value of ln(1.0000001) was calculated. The TI-30 Eco RS shows the incorrect answer, but the TI-30X shows the correct answer.
Original TI-30 model (ca. 1979) with LED display
TI-30 Stat
A scientific calculator is an electronic calculator, either desktop or handheld, designed to perform calculations using basic and complex mathematical operations and functions. They have completely replaced slide rules as well as books of mathematical tables and are used in both educational and professional settings.
Casio fx-991DE X - A modern Digital calculator from Casio with a dot matrix "Natural Textbook" LCD
Casio fx-77, a solar-powered digital calculator from the 1980s using a single-line LCD
HP-35, the world's first scientific pocket calculator, was introduced in 1972 by Hewlett-Packard. It used reverse Polish notation and an LED display.
TI SR-50
