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The first American-made pocket-sized calculator, the Bowmar 901B (popularly termed The Bowmar Brain), measuring 5.2 by 3.0 by 1.5 inches (132 mm × 76 mm × 38 mm), came out in the Autumn of 1971, with four functions and an eight-digit red LED display, for US$240, while in August 1972 the four-function Sinclair Executive became the first ...
The Curta was conceived by Curt Herzstark in the 1930s in Vienna, Austria.By 1938, he had filed a key patent, covering his complemented stepped drum. [3] [4] This single drum replaced the multiple drums, typically around 10 or so, of contemporary calculators, and it enabled not only addition, but subtraction through nines complement math, essentially subtracting by adding.
The first model in the series, called the fx-CG100, retains the same power source as its predecessors (4 AAA batteries) instead of Li-ion batteries used by contemporary calculators and also adopts a USB C connector for connecting with a computer (instead of a mini-USB connector) while retaining the 2.5 mm I/O connector for connecting to other ...
In early 2015, Casio introduced a new line of calculators called ClassWiz (stylized as C L A S S W I Z) for different markets, featuring a high resolution (192×63) dot matrix Natural Textbook Display and incorporating spreadsheet functions in some models. This series of calculators is called the fx-EX series and it succeeds the fx-ES Plus ...
Modern scientific calculators generally have many more capabilities than the original four- or five-function calculator, and the capabilities differ between manufacturers and models. The capabilities of a modern scientific calculator include: Scientific notation; Floating-point decimal arithmetic; Logarithmic functions, using both base 10 and ...
The original TI-Nspire was developed out of the TI PLT SHH1 prototype model, the TI-92 series of calculators released in 1995, and the TI-89 series of calculators released in 1998. [2] [3] In 2011, Texas Instruments released the CX line of their TI-Nspire calculators which effectively replaced the previous generation.
A dual-powered (battery and solar cells) algebraic scientific calculator with 2-line dot matrix and segment display. HP-11C: 1981 Scientific Programmable, including hyperbolics, gamma function, statistical functions, and random number generation. HP-10s: 2007 A scientific calculator with more than 240 built-in functions, with 2 lines × 10 ...
This model incorporates the multi-line dot matrix display already used in the TI-30 and 34 MultiView series calculators. This display allows the calculator to perform numeric derivatives and integrals in a way similar to the much more advanced TI-83 series graphing calculators. Maximum expression length is reduced to 80 characters.
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