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12-493: Bachama has a decimal/ quinary number system , with both 5 and 10 as bases: 8 is 4-4, 6 and 7 are based on adding to 5, and 9 means '(10) less 1'. Audio Recordings in Bacama This article about a Biu-Mandara language is a stub . You can help Misplaced Pages by expanding it . This Nigeria -related article is a stub . You can help Misplaced Pages by expanding it . Quinary Quinary ( base 5 or pental )

24-560: A range of scientific calculators made by Sharp Corporation , capable of displaying 2 lines, with multi-line playback. It is the successor to the Sharp EL-500V series . Starting with the W series, this product line supports dual-line displays with multiple line playback, constant calculation, chain calculation, similar to the Casio fx-MS series , TI-34 II Explorer Plus . The upper line shows entered expression (up to 12 characters at

36-909: A time). The basic EL-509W, EL-531W models includes 272 functions, which include power/root/ logarithm functions, trigonometry functions, factorials , random functions, fractions , angle unit conversion, polar / cartesian coordinate conversion, binary / pental / octal / hexadecimal calculations (including logical operations), 1-2 variable statistics with 6 regression models (linear, logarithmic, exponential , power, inverse, quadratic). Calculations are done in 14 digits internally. EL-520W adds 52 physical constants, 44 unit conversions, complex number calculation, 2-3 variable linear equation solver, quadratic equation / cubic function equation solver, Newton generic equation solver, numeric derivative / integral functions, formula memory (max 4 formulae, 256 characters total), algebraic substitution (simulation calculation) to EL-509/531W, for total of 419 functions. It

48-420: Is VII , and seventy is LXX . The full list of symbols is: Note that these are not positional number systems. In theory, a number such as 73 could be written as IIIXXL (without ambiguity) and as LXXIII. To extend Roman numerals to beyond thousands, a vinculum (horizontal overline) was added, multiplying the letter value by a thousand, e.g. overlined M̅ was one million. There is also no sign for zero. But with

60-672: Is 131. EL-506W is sold as EL-546W in Canada . EL-730 series uses the same interface as the EL-500W series, but contains financial functions. EL-735 displays 9-digit mantissa in scientific display mode. There is only 1 memory register. Functions include Cost/Sell Margin, Compound Interest, Amortisation of Payment, Bond Calculation, 360-Day Calendar, Non-Uniform Cash Flow, Constant Calculation, Chain Calculation, 1-Var./2-Var. Statistics, Date Calculation, Database, Sign Change, Right Shift. It

72-875: Is 131. The keyboard is not plastic like the others in the lineup. All the models above support Direct Algebraic Logic (D.A.L.), which is an infix input system used by Sharp similar to Casio's V.P.A.M. EL-501W does not support D.A.L., and only has the 7-segment digit line in EL-509W. It only supports 8-digit mantissa display in scientific notation mode. Functions are further stripped down from EL-500W. Removed functions include last answer recall, nPr/nCr, reduction study, highest common factor/lowest common multiple, quotient/remainder calculation, equation playback. However, it gains cubic power/root, hyperbolic trigonometry, angle unit conversion, polar/cartesian coordinate conversion, complex number calculation, Bin/Oct/Hex calculations (without logical operations) over EL-500W. Total function

84-414: Is a numeral system with five as the base . A possible origination of a quinary system is that there are five digits on either hand . In the quinary place system, five numerals, from 0 to 4 , are used to represent any real number . According to this method, five is written as 10, twenty-five is written as 100, and sixty is written as 220. As five is a prime number, only the reciprocals of

96-632: Is a certain likelihood that the system was extended this high only at the time of elicitation with one single speaker," pointing to the Biwat language as a similar case (previously attested as 5-20, but with one speaker recorded as making an innovation to turn it 5-25). A decimal system with two and five as a sub-bases is called biquinary and is found in Wolof and Khmer . Roman numerals are an early biquinary system. The numbers 1 , 5 , 10 , and 50 are written as I , V , X , and L respectively. Seven

108-573: Is a variant of biquinary that was used on a number of early computers including Colossus and the IBM 650 to represent decimal numbers. Few calculators support calculations in the quinary system, except for some Sharp models (including some of the EL-500W and EL-500X series, where it is named the pental system ) since about 2005, as well as the open-source scientific calculator WP 34S . Sharp EL-500W series Sharp EL-500W series include

120-778: Is powered by 2 LR44 batteries or light. EL-506W adds matrix calculation , list calculation (max 4 lists, 16 elements/list) to EL-520W, for total of 469 functions. EL-500M is a single line version of EL-509W, which contains only the dot matrix line. Dot matrix line only shows 11 characters. Memory register is reduced from 9 to 1. Removed functions include engineering unit display mode, cubic root/power, hyperbolic trigonometry, random dice, random coin, random integer, angle unit conversion, polar/cartesian coordinate conversion, multi-line playback, binary/pental/octal/hexadecimal calculations, 2-variable statistics, 2-key roll-over. However, it adds reduction study, highest common factor/lowest common multiple, quotient/remainder calculation. Total function

132-432: The introduction of inversions like IV and IX, it was necessary to keep the order from most to least significant. Many versions of the abacus , such as the suanpan and soroban , use a biquinary system to simulate a decimal system for ease of calculation. Urnfield culture numerals and some tally mark systems are also biquinary. Units of currencies are commonly partially or wholly biquinary. Bi-quinary coded decimal

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144-572: The powers of five terminate, although its location between two highly composite numbers ( 4 and 6 ) guarantees that many recurring fractions have relatively short periods. Many languages use quinary number systems, including Gumatj , Nunggubuyu , Kuurn Kopan Noot , Luiseño , and Saraveca . Gumatj has been reported to be a true "5–25" language, in which 25 is the higher group of 5. The Gumatj numerals are shown below: However, Harald Hammarström reports that "one would not usually use exact numbers for counting this high in this language and there

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