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Comparison of Texas Instruments graphing calculators A graphing calculator is a class of hand-held calculator that is capable of plotting graphs and solving complex functions. There are several companies that manufacture models of graphing calculators. Texas Instruments is a major manufacturer.
Differences between Julian and Gregorian dates The need to correct the calendar arose from the realisation that the correct figure for the number of days in a year is not 365.25 (365 days 6 hours) as assumed by the Julian calendar but slightly less (c. 365.242 days). The Julian calendar therefore has too many leap years. The consequence was that the basis for the calculation of the date of ...
Comparison of HP graphing calculators A graphing calculator is a class of hand-held calculator that is capable of plotting graphs and solving complex functions. While there are several companies that manufacture models of graphing calculators, Hewlett-Packard is a major manufacturer.
TI-Nspire series. The TI-Nspire is a graphing calculator line made by Texas Instruments, with the first version released on 25 September 2007. [1][better source needed] The calculators feature a non- QWERTY keyboard and a different key-by-key layout than Texas Instruments's previous flagship calculators such as the TI-89 series.
A scientific calculator is an electronic calculator, either desktop or handheld, designed to perform calculations using basic (addition, subtraction, multiplication, division) and advanced (trigonometric, hyperbolic, etc.) mathematical operations and functions. They have completely replaced slide rules as well as books of mathematical tables ...
Conversion between Julian and Gregorian calendars The tables below list equivalent dates in the Julian and Gregorian calendars. Years are given in astronomical year numbering. This is a visual example of the official date change from the Julian calendar to the Gregorian
The year in both calendars consists of 365 days, with a leap day being added to February in the leap years. The months and length of months in the Gregorian calendar are the same as for the Julian calendar. The only difference is that the Gregorian reform omitted a leap day in three centurial years every 400 years and left the leap day unchanged.
The HP calculators Voyager series consisted of five models, some of which were manufactured in several variants (with years of production): HP-10C – basic scientific calculator (1982–1984). HP-11C – mid-range scientific calculator (1981–1989). HP-12C – business/financial calculator (1981–present). HP-15C – advanced scientific ...