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An electronic pocket calculator with a seven-segment liquid-crystal display (LCD) that can perform arithmetic operations. A modern scientific calculator with an LCD. An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics .
Dyscalculia (/ ˌ d ɪ s k æ l ˈ k juː l i ə /) is a disability resulting in difficulty learning or comprehending arithmetic, such as difficulty in understanding numbers, learning how to manipulate numbers, performing mathematical calculations, and learning facts in mathematics.
Abacus. An abacus ( pl.: abaci or abacuses ), also called a counting frame, is a hand -operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Arabic numeral system. [1] An abacus consists of a two-dimensional array of slidable beads (or similar objects).
Little Professor. Little Professor with accompanying booklet. The Little Professor is a backwards-functioning calculator designed for children ages 5 to 9. Instead of providing the answer to a mathematical expression entered by the user, it generates unsolved expressions and prompts the user for the answer. [1]
Mark J. Price, Beacon Journal reporter. The Texas Instruments TI-30 retailed for $24.95 (about $130 today) and operated on a 9-volt battery. It had a red, eight-digit display and offered such ...
Order of operations. In mathematics and computer programming, the order of operations is a collection of rules that reflect conventions about which operations to perform first in order to evaluate a given mathematical expression . These rules are formalized with a ranking of the operations. The rank of an operation is called its precedence, and ...
Pascal's calculator (also known as the arithmetic machine or Pascaline) is a mechanical calculator invented by Blaise Pascal in 1642. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as the supervisor of taxes in Rouen. [2] He designed the machine to add and subtract two numbers ...
Hypercalculia is "a specific developmental condition in which the ability to perform mathematical calculations is significantly superior to general learning ability and to school attainment in maths." [1] A 2002 neuroimaging study of a child with hypercalculia suggested greater brain volume in the right temporal lobe.