Summing amplifier for details. Analog computers work directly with physical quantities, so their addition mechanisms depend on the form of the addends. A mechanical adder might represent two addends as the positions of sliding blocks, in which case they can be added with an averaging lever. If the addends are the rotation speeds of two shafts, they can be added with a differential.
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Such compressors can be used to speed up the summation of three or more addends. If the addends are exactly three, the layout is known as the carry-save adder. If the addends are four or more, more than one layer of compressors is necessary, and there are various possible designs for the circuit: the most common are Dadda and Wallace trees. This kind of circuit is most notably used in multipliers, which is why these circuits are also known as Dadda and Wallace multipliers.
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194 Unlike addition on paper, addition on a computer often changes the addends. On the ancient abacus and adding board, both addends are destroyed, leaving only the sum. The influence of the abacus on mathematical thinking was strong enough that early Latin texts often claimed that in the process of adding "a number to a number", both numbers vanish.Karpinski pp.
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In Threes, the player slides numbered tiles on a four-by-four grid to combine addends and multiples of three. Vollmer cited Drop7 as an inspiration for the game, having played it for two years beforehand. link=File:Threes video game trailer.gif Threes had no original inclination towards minimalism.
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The addition of a pyrrolidine ring can lead to a variety of functional groups such as second-generation poly(amidoamine) dendrimers, phthalocyanine addends, perfluoroalkylsilane groups, and amino ethyleneglycol groups. The Diels-cycloaddition reaction can occur, especially on fluorinated carbon nanotubes. They are known to undergo Diels–Alder reactions with dienes such as 2,3-dimethyl-1,3-butadiene, anthracene, and 2-trimethylsiloxyl-1,3-butadiene.
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Threes! is an indie puzzle video game by Sirvo, an independent development team consisting of game designer Asher Vollmer, illustrator Greg Wohlwend, and composer Jimmy Hinson. The game was released on February 6, 2014, for iOS devices and later ported to Android, Xbox One, and Windows Phone. In Threes, the player slides numbered tiles on a grid to combine addends and multiples of three.
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In mathematics, summation is the addition of a sequence of any kind of numbers, called addends or summands; the result is their sum or total. Beside numbers, other types of values can be summed as well: functions, vectors, matrices, polynomials and, in general, elements of any type of mathematical objects on which an operation denoted "+" is defined. Summations of infinite sequences are called series. They involve the concept of limit, and are not considered in this article.
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The official game trailer, depicting standard sliding tile gameplay The player slides numbered tiles on a four-by-four grid to combine addends and multiples of three. For example, ones and twos merge to become a single "three" tile, two threes merge into "six", and two sixes merge into "12". Swiping the screen up, down, left, or right moves all of the tiles one square (if possible) on the grid in that direction and adds a new tile to the grid in the same direction. The color of the incoming tile is shown onscreen.
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Addition, denoted by the symbol +, is the most basic operation of arithmetic. In its simple form, addition combines two numbers, the addends or terms, into a single number, the sum of the numbers (such as or ). Adding finitely many numbers can be viewed as repeated simple addition; this procedure is known as summation, a term also used to denote the definition for "adding infinitely many numbers" in an infinite series. Repeated addition of the number 1 is the most basic form of counting; the result of adding is usually called the successor of the original number.
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