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Calculator is a built-in application on iOS and Mac. On Macintosh systems it started out as a desk accessory and developed into a separate application program as of Mac OS X. Calculator has been on iOS since the original iPhone and on Mac since the original Macintosh in 1984.

Calculator on iOS

Calculator has been on iOS since the original iPhone, however it is not available on the iPad. Since iOS 3.0 users can rotate their device and the normal calculator will transform into a scientific one. Swiping from left to right at the top where calculations are shown will delete one number. iOS 7 has added a new interface and with it, the buttons became bigger.

Calculator in the Classic Mac OS

In classic Mac OS, the Calculator was a desk accessory. 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. Its design was maintained with the same basic math operations until the final release of classic Mac OS in 2002. It remained this way through to Mac OS 9.2.2.

It was very simplistic, some would say too simplistic. It contained a result area and standard calculator push-buttons which could be activated by clicking the on-screen buttons or by using the physical keyboard buttons.

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Calculator on the original Macintosh

Calculator in Mac OS X

The brand new Calculator in Mac OS X is much more different than the one in Mac OS. When Mac OS X was released, they changed it completely. The Calculator can be a Dashboard widget on Mac OS X Tiger and later, however it only supports basic mode. It has three modes: basic, scientific and programmer. Users running Mac OS X Snow Leopard can also take advantage of spotlight search calculator, that supports simple arithmetic functions. They include the standard addition, subtraction, division, multiplication, exponentiation and the use of the percent sign to denote percentage.

Calculator has Reverse Polish notation and VoiceOver support.

The calculator also includes some basic conversion functions to convert between units in the following categories: -Area -Currency -Energy or Work -Temperature -Length -Speed -Pressure -Weight/Mass -Power -Volume Currency exchange rates may be updated from the Internet.

Calculatorbasicios

Basic calculator on iOS 7

Scientificcalculatorios

Scientific calculator on iOS 7

1Apple

Basic calculator on iOS 6

Basic Calculator

Basic calculator on Mac

Scientific Calculator

Scientific calculator on Mac

Programmer Calculator

Programmer calculator on Mac

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