9/20/2023 0 Comments Counting wooden abacusThe slide rule is closely related to nomograms used for application-specific computations. Slide rules manufactured for specialized fields such as aviation or finance typically feature additional scales that aid in specialized calculations particular to those fields. Slide rules exist in a diverse range of styles and generally appear in a linear, circular or cylindrical form, with slide rule scales inscribed with standardized graduated markings. Maximum accuracy for standard linear slide rules is about three decimal significant digits, while scientific notation is used to keep track of the order of magnitude of results. It is not typically designed for addition or subtraction, which is usually performed using other methods, like using an abacus. The slide rule (also known colloquially in the United States as a slipstick ) is a mechanical calculator (one of the simplest analog computers) hand-operated by sliding two rulers to perform multiplication and division primarily, and possibly exponents, roots, logarithms, and trigonometry. Typical ten-inch (25 cm) student slide rule (Pickett N902-T simplex trig) Simple slide rule made from index cards marked with powers of 2, calculating 8x4 by aligning the bottom ruler to start where the top ruler is 8, and then reading at the number above where the bottom ruler is 4. For other uses, see Slide rule (disambiguation).
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