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LED display digits of the original TI-30
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 E
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
Original TI-30 model (ca. 1979) with LED display
TI-30 Stat
TI-30 Stat
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Casio fx-991DE X - A modern Digital calculator from Casio with a dot matrix "Natural Textbook" LCD
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
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.
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
TI SR-50