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2. Mathcad - Wikipedia

   en.wikipedia.org/wiki/Mathcad

   Mathcad was conceived and developed by Allen Razdow and Josh Bernoff at Mathsoft founded by David Blohm and Razdow. It was released in 1986. It was the first system to support WYSIWYG editing and recalculation of mathematical calculations mixed with text. [3]

3. Sinclair Executive - Wikipedia

   en.wikipedia.org/wiki/Sinclair_Executive

   The Sinclair Executive was the world's first "slimline" pocket calculator, and the first to be produced by Clive Sinclair's company Sinclair Radionics.Introduced in 1972, the calculator was produced in at least two versions with different keyboard markings; a variant called the Sinclair Executive Memory was introduced in 1973.

4. Toto (lottery) - Wikipedia

   en.wikipedia.org/wiki/Toto_(lottery)

   The computer randomly selects 6 numbers from 1 to 49 for the buyer. No bet slip is required for QuickPick bets. Ordinary Bet The buyer selects 6 numbers from 1 to 49 by marking them on a bet slip. System Bet The buyer selects 7 to 12 numbers from 1 to 49 by marking on a bet slip. For example, a System 9 bet is a selection of 9 numbers. System Roll

5. Graphing calculator - Wikipedia

   en.wikipedia.org/wiki/Graphing_calculator

   Texas Instruments TI-84 Plus, the most successful graphing calculator in terms of sales. A graphing calculator (also graphics calculator or graphic display calculator) is a handheld computer that is capable of plotting graphs, solving simultaneous equations, and performing other tasks with variables.

6. List of numbers - Wikipedia, the free encyclopedia

   en.wikipedia.org/wiki/List_of_numbers

   A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.

7. List of computer algebra systems - Wikipedia

   en.wikipedia.org/wiki/List_of_computer_algebra...

   The following tables provide a comparison of computer algebra systems (CAS). [ 1 ] [ 2 ] [ 3 ] A CAS is a package comprising a set of algorithms for performing symbolic manipulations on algebraic objects, a language to implement them, and an environment in which to use the language.

8. dc (computer program) - Wikipedia

   en.wikipedia.org/wiki/Dc_(computer_program)

   dc (desk calculator) is a cross-platform reverse-Polish calculator which supports arbitrary-precision arithmetic. [1] It was written by Lorinda Cherry and Robert Morris at Bell Labs. [2] It is one of the oldest Unix utilities, preceding even the invention of the C programming language. Like other utilities of that vintage, it has a powerful set ...

9. Significant figures - Wikipedia

   en.wikipedia.org/wiki/Significant_figures

   An exact number has an infinite number of significant figures. If the number of apples in a bag is 4 (exact number), then this number is 4.0000... (with infinite trailing zeros to the right of the decimal point). As a result, 4 does not impact the number of significant figures or digits in the result of calculations with it.