# Calculator

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**Graphing calculator**— A graphing calculator (also known as a graphic calculator or graphical calculator) typically refers to a class of handheld calculators that are capable of plotting graphs, solving simultaneous equations, and performing numerous other tasks with… …62

**Formula calculator**— A formula calculator is a software calculator that can perform a calculation in two steps:1. Type in a formula from the keyboard. 2. Press a single button or key to see the formula’s value. [Formula Calculators Pty Ltd [home page on the Internet] …63

**Scientific calculator**— A scientific calculator is a type of electronic calculator, usually but not always handheld, designed to calculate problems in science (especially physics), engineering, and mathematics. They have almost completely replaced slide rules in almost… …64

**Programmable calculator**— Programmable calculators are calculators capable of being programmed much like a computer.Since the early 1990s, most of these flexible handheld units belong to the class of graphing calculators. Before the mass manufacture of inexpensive dot… …65

**Sumlock ANITA calculator**— The ANITA Mark VII and ANITA Mark VIII calculators were launched simultaneously in late 1961 as the world s first all electronic desktop calculators. Designed and built by the Bell Punch Co. in Britain, and marketed through its Sumlock… …66

**Curta calculator**— Curta (Type I) mechanical calculator shown in the operational position (left hand). The crank is turned with the right hand. The Curta is a small, hand cranked mechanical calculator introduced in 1948. It has an extremely compact design: a small… …67

**Marchant Calculator**— Marchant XLA calculator, based on Friden s design The Marchant Calculating Machine Co. was founded in 1911 by Rodney and Alfred Marchant in Oakland, California. The company built mechanical, and then electromechanical calculators which had a… …68

**Monroe Calculator Company**— The Monroe Calculator Company was a leading maker of adding machines and calculators founded in 1912 by Jay R. Monroe and now known as Monroe Systems for Business. The company was also known as Monroe Calculating Machine Company, Monroe THE… …69

**Dowry Calculator**— DowryCalculator.com is a satirical website that parodies India s one of the most prominent and archaic societal evils Dowry. According to Sify, “The calculator mocks the varied factors that potential brides and grooms in the country have to… …70

**Assembly shell (graphing calculator)**— On graphing calculators, an assembly shell is a program that is used to run programs written in the calculator s native machine code rather than the calculator s standard high level programming language. Such programs were originally created at a …