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2. Calculator - Wikipedia

   en.wikipedia.org/wiki/Calculator

   A modern scientific calculator with an LCD. An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics. The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the ...

3. Scientific calculator - Wikipedia

   en.wikipedia.org/wiki/Scientific_calculator

   Casio fx-77, a solar-powered digital calculator from the 1980s using a single-line LCD. A scientific calculator is an electronic calculator, either desktop or handheld, designed to perform calculations using basic (addition, subtraction, multiplication, division) and complex (trigonometric, hyperbolic, etc.) mathematical operations and functions.

4. HP calculators - Wikipedia

   en.wikipedia.org/wiki/HP_calculators

   A scientific calculator with more than 240 built-in functions, with 2 lines × 10 digits LCD. The finance-centric programmable calculator from the Voyager series introduced in the 1980s. The longest running product in the HP calculator line, it remains in production. Various models exist, the latest in 2008.

5. TI-30 - Wikipedia

   en.wikipedia.org/wiki/TI-30

   In 1980, Texas Instruments converted the TI-30 to use a liquid crystal display, releasing the TI-30 LCD in Europe and the TI-30 II a year later in the U.S. The calculator itself remained functionally similar over several redesigns in the following few years, with solar power coming to the line in 1982 in a joint venture with Toshiba.

6. Casio V.P.A.M. calculators - Wikipedia

   en.wikipedia.org/wiki/Casio_V.P.A.M._calculators

   The model featured a 5×6-dot LCD matrix cells on the top line of the screen and a 7-segment LCD on the bottom line of the screen that had been used in Casio fx-4500P programmable calculators. [1] The S-V.P.A.M. system was also used in the other W series models and also the MS series of calculators that followed.

7. History of display technology - Wikipedia

   en.wikipedia.org/wiki/History_of_display_technology

   History of display technology. Electrically operated display devices have developed from electromechanical systems for display of text, up to all-electronic devices capable of full-motion 3D color graphic displays. Electromagnetic devices, using a solenoid coil to control a visible flag or flap, were the earliest type, and were used for text ...