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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] On an expression or formula calculator, one types in an expression and then presses a key, such as "=" or "Enter", to evaluate the expression.
A calculator function has been included with iOS since its launch on iPhone [3] and iPod Touch. [4] However, iPads have never had a first party calculator application, until the announcement of iPadOS 18 in 2024. A native calculator function was added to the Apple Watch with watchOS 6, which included a dedicated button for calculating tips. [5]
Was the first scientific calculator to fly in space in 1973. [5] HP-35 calculators were carried on the Skylab 3 and Skylab 4 flights, between July 1973 and February 1974. [6] Is the first pocket calculator with a numeric range that covered 200 decades (more precise 199, ±10 ±99). [5]
In OS 3.2, conic equations in standard formats can be graphed and a new chemistry feature, Chem Box, allows users to write chemical notations. [32] OS 3.2 also saw the inclusion of the Chipmunk physics engine for use in Lua programs. [33] In OS 3.9, the area between curves can now be calculated on the graph bar. [34]
Math Blaster! is a 1983 educational video game, and the first entry in the "Math Blaster" series within the Blaster Learning System created by Davidson & Associates. The game was developed by former educator Jan Davidson. [ 2 ]
Smaller programmable model with programs up to 49 steps. Version HP-25C was first calculator with "continuous memory". HP-27S: 1988 The first HP pocket calculator to use algebraic notation only rather than RPN. It was a "do all" calculator that included algebraic solver like the HP-18C, statistical, probability and time/value of money ...
Though the programming language used on the 41 series is a version of the keystroke programming languages used in all preceding programmable HP calculators, the range of technologies, and programming-related usability and extensibility features available in 41 series models (notably keyboard overlays, a fully remappable keyboard, I/O ...