For the fitness device, see Activity tracker. Its design was maintained with the same basic math operations until the final release of classic Mac OS in 2002. Its original incarnation was developed by Chris Espinosa and its appearance was designed, in part, by Steve Jobs when Espinosa, flustered by Jobs's dissatisfaction with all of his prototype designs, conceived an application called The Steve Jobs Roll Your Own Calculator Construction Set that allowed Jobs to tailor the look of the calculator to his liking.

The Calculator appeared first as a desk accessory in first version of Macintosh System for the 1984 Macintosh 128k. Apple currently ships a different application called Grapher.Ĭalculator has Reverse Polish notation support, and can also speak the buttons pressed and result returned. Though no higher math capability was included, third-party developers provided upgrades, and Apple released the Graphing Calculator application with the first PowerPC release (7.1.2) of the Mac OS, and it was a standard component through Mac OS 9. The Calculator program has a long history going back to the very beginning of the Macintosh platform, where a simple four-function calculator program was a standard desk accessory from the earliest system versions. Scientific mode supports exponents and trigonometric functions, and programmer mode gives the user access to more options related to computer programming. Basic includes a number pad, buttons for adding, subtracting, multiplying, and dividing, as well as memory keys. It has three modes: basic, scientific, and programmer. Calculator is a basic calculator application made by Apple Inc.

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