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A simple arithmetic calculator was first included with Windows 1.0. [6]In Windows 3.0, a scientific mode was added, which included exponents and roots, logarithms, factorial-based functions, trigonometry (supports radian, degree and gradians angles), base conversions (2, 8, 10, 16), logic operations, statistical functions such as single variable statistics and linear regression.
Disinhibited Social Engagement Disorder (DSM-5 313.89 (F94.2)) is the 2013 Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) name formerly listed as a sub-type of Reactive Attachment Disorder (RAD) called Disinhibited Attachment Disorder (DAD).
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 advanced (trigonometric, hyperbolic, etc.) mathematical operations and functions.
Reactive attachment disorder (RAD) is described in clinical literature as a severe disorder that can affect children, although these issues do occasionally persist into adulthood. [1] [2] [3] RAD is characterized by markedly disturbed and developmentally inappropriate ways of relating socially in most contexts. It can take the form of a ...
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 ...
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Also there are differences between calculators in the way a given sequence of button presses is interpreted. The result can be: −1 : If the subtraction button − is pressed after the multiplication × , it is interpreted as a correction of the × rather than a minus sign, so that 4 − 5 is calculated.
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