Search results
Results from the Tech24 Deals Content Network
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 ...
Mental calculation has long been a component of mathematical education. Mental calculation consists of arithmetical calculations using only the human brain, with no help from any supplies (such as pencil and paper) or devices such as a calculator. People may use mental calculation when computing tools are not available, when it is faster than ...
Calculator input methods. There are various ways in which calculators interpret keystrokes. These can be categorized into two main types: On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. [ 1][ 2][ 3]
Cobweb plot of the orbit 10 → 5 → 8 → 4 → 2 → 1 → ... in an extension of the Collatz map to the real line. The Collatz map can be extended to the real line by choosing any function which evaluates to x / 2 {\displaystyle x/2} when x {\displaystyle x} is an even integer, and to either 3 x + 1 {\displaystyle 3x+1} or ( 3 x + 1 ) / 2 ...
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]
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 . The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the ...
WolframAlpha ( / ˈwʊlf.rəm -/ WUULf-rəm-) is an answer engine developed by Wolfram Research. [ 3] It is offered as an online service that answers factual queries by computing answers from externally sourced data. [ 4][ 5] WolframAlpha was released on May 18, 2009, and is based on Wolfram's earlier product Wolfram Mathematica, a technical ...
Tell your friend to choose either of the numbers and to multiply it by 5. (8 x 5 = 40) Then tell your friend to add 7 to this result. (40 + 7 = 47) Multiply the resulting sum by 2. (47 x 2 = 94 ...