43s:project
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| + | ====== WP 43S Project ====== | ||
| + | |||
| + | ===== Introduction ===== | ||
| + | |||
| + | A brain storming area for the development of the 43S calculator. | ||
| + | |||
| + | ===== Goals ===== | ||
| + | |||
| + | To create the best ever RPN calculator. | ||
| + | |||
| + | * A feature super set of the HP-42s. | ||
| + | * A (mostly) feature super set of the WP 34S. | ||
| + | |||
| + | ===== Technicalities ===== | ||
| + | |||
| + | * Proper alpha keyboard like the 34S or 41C series. | ||
| + | * Menu based or XEQ alpha based -- there will be too many functions for the keyboard. | ||
| + | * Typed values like the 42s and later RPL machines. | ||
| + | * Fully assignable keyboard with the 41C series hold to see function, keep holding to cancel. | ||
| + | * Less cluttered keyboard than the 34S -- fewer shift keys, less overloading and complexity in the keyboard state engine and no hot keys. | ||
| + | * Dynamic memory allocation. | ||
| + | * I/O of some kind (serial, USB, SD). | ||
| + | * Modular software design to allow independent development of (native) functions. | ||
| + | * A less limited font -- sub and superscripts for every available character. | ||
| + | |||
| + | ===== Data Types ===== | ||
| + | |||
| + | * Reals (decimal or binary or both?) | ||
| + | * Long reals (again decimal or binary -- leaning towards binary here to make use of lots of existing libraries) | ||
| + | * Integers (binary integers like the 16C/34S or unlimited precisions ones like the 50g or both?) | ||
| + | * Strings | ||
| + | * Complex numbers | ||
| + | * Arrays (at least one and two dimensional, | ||
| + | * Fractions (i.e. exact rationals) | ||
| + | * Intervals (?) | ||
| + | * Quaternions (?) | ||
| + | * Units | ||
| + | |||
| + | ===== Hardware ===== | ||
| + | |||
| + | * Likely ARM embedded system on a chip based. | ||
| + | * Lots more memory (flash and RAM) than the 34S (128kb & 2kb respectively). | ||
43s/project.txt · Last modified: 2012/05/14 02:17 by pauli
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