Developer description

Scientific calculator displays of fractions and decimal equivalents. #Input Modern electronic calculators contain a keyboard with buttons for digits and arithmetical operations. Some even contain 00 and 000 buttons to make large numbers easier to enter. Most basic calculators assign only one digit or operation on each button. However, in more specific calculators, a button can perform multi-function working with key combinations. #Display output Calculators usually have liquid-crystal displays (LCD) as output in place of historical vacuum fluorescent displays (VFD).
Details are provided in the section Technical improvements. Large-sized figures and comma separators are often used to improve readability. Various symbols for function commands may also be shown on the display. Fractions such as 1⁄3 are displayed as decimal approximations, for example rounded to 0.33333333. Also, some fractions such as 1⁄7 which is 0.14285714285714 (to 14 significant figures) can be difficult to recognize in decimal form; as a result, many scientific calculators are able to work in vulgar fractions or mixed numbers.
#Memory Calculators also have the ability to store numbers into memory. Basic types of these store only one number at a time. More specific types are able to store many numbers represented in variables. The variables can also be used for constructing formulas. Some models have the ability to extend memory capacity to store more numbers; the extended address is referred to as an array index.

Last updated 20 May 2015

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