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The version of BASIC of these machines is called Casio POCKETPC BASIC [1] The language is a linear structured, BASIC -based programming language. It was devised to allow users to program in commonly performed calculations, such as the Pythagorean theorem and complex trigonometric calculations.
It includes the basic features of modern computers and can be programmed using machine code (usually in decimal) or assembly. The model simulates a computer environment using a visual metaphor of a person (the "Little Man") in a room with 100 mailboxes , a calculator (the accumulator) and a program counter.
For example, both devices types were programmable in unstructured BASIC and with few exceptions featured QWERTY keyboards. However, there were also some differences: BASIC-programmable calculators often featured an additional "calculator-like" keyboard and a special calculator mode in which the system behaved like a scientific calculator.
The simplest example given by Thimbleby of a possible problem when using an immediate-execution calculator is 4 × (−5). As a written formula the value of this is −20 because the minus sign is intended to indicate a negative number, rather than a subtraction, and this is the way that it would be interpreted by a formula calculator.
GNOME Calculator, a software calculator. A software calculator is a calculator that has been implemented as a computer program, rather than as a physical hardware device. They are among the simpler interactive software tools, and, as such, they provide operations for the user to select one at a time. They can be used to perform any process that ...
Personal computers often come with a calculator utility program that emulates the appearance and functions of a calculator, using the graphical user interface to portray a calculator. Examples include the Windows Calculator, Apple's Calculator, and KDE's KCalc. Most personal data assistants (PDAs) and smartphones also have such a feature.
SymPy includes features ranging from basic symbolic arithmetic to calculus, algebra, discrete mathematics, and quantum physics. It is capable of formatting the result of the computations as LaTeX code. [4] [5] SymPy is free software and is licensed under the 3-clause BSD. The lead developers are Ondřej Čertík and Aaron Meurer.
RPL supports basic conditional testing through the IF/THEN/ELSE structure. The basic syntax of this block is: IF condition THEN if-true [ELSE if-false] END The following example tests to see if the number at the bottom of the stack is "1" and, if so, replaces it with "Equal to one": « IF 1 == THEN "Equal to one" END »