- Windows 10 rpn scientific calculator how to#
- Windows 10 rpn scientific calculator software#
- Windows 10 rpn scientific calculator code#
- Windows 10 rpn scientific calculator Pc#
- Windows 10 rpn scientific calculator plus#
When used on a desktop or tablet, it includes a “tape” to show results of calculations. Results can be displayed with up to nine decimal places of accuracy. RPN Scientific X has a 100 level stack and supports ten store and recall memory locations. The Download Now link directs you to the Windows Store, where you can continue the download process. Expressions may be entered in either algebraic or RPN modes.
Windows 10 rpn scientific calculator plus#
It performs all of the 10C’s scientific math functions. Free scientific calculator plus advanced 991 calc (10 Similar Apps & 136,905 Reviews) vs. It was designed especially for Windows 10, is free, does not contain any advertisements, and does not collect information about you, your computer or your phone. The format for entering and displaying coordinates using degrees, minutes and seconds is DD.MMSSssss where: If the number of minutes is a single digit, the single. Free Get in Store app Description RPN Scientific is a scientific Reverse Polish Notation (RPN) calculator based on the venerable Hewlett Packard 10C scientific calculator. To display the deg and dms buttons, put the calculator into Scientific mode, and click the up arrow () button.
Windows 10 rpn scientific calculator how to#
#RPN SCIENTIFIC II FOR WINDOWS 10 MOD#įunctions: (a)sin, (a)cos, (a)tan, y^x, x root y, e^x, ln, 10^x, log, mod.Internal accuracy configurable from 6 to 32 decimal places.This is a scientific calculator I built that uses RPN notation.RPN Scientific X is a scientific Reverse Polish Notation (RPN) calculator based on the venerable Hewlett Packard 10C scientific calculator. How to use the deg and dms buttons on the Windows 10 calculator. The interface shows 4 levels of the stack, similar to some HP calculators.
Windows 10 rpn scientific calculator code#
While I was writing the code for BCD calculations, I used a console program to test the routines. You can download it from GitHub if you want to test out the functionality: rpnmain_pc.c It will compile for Windows if #WINDOWS is defined or for Linux with the ncurses library if #LINUX is defined. Numbers are stored in unpacked BCD format on an external SRAM chip. Would become something like this (assuming we are passing pointers): I wanted to access this memory using variables but there is no convenient way to do this since every variable requires a function to access it. RPN scientific calculator that comes with support for various calculations (e.g. To simplify things, I wrote a preprocessor program that looks for any variables that need to be stored in external RAM and converts access to them to function calls.
Windows 10 rpn scientific calculator Pc#
#RPN SCIENTIFIC II FOR WINDOWS 10 PC#Įxternal variables are all stored as pointers, so the PC version will work exactly the same with or without the preprocessor. To mark variables as external, #pragma directives are used. Unsigned char *text2=(unsigned char*)230 Unsigned char *text1=(unsigned char*)200 Here is an example:įor (int i=0 msg i++) putchar(msg) įor (int i=0 RAM_Read(msg+i) i++) putchar(RAM_Read(msg+i)) These are usually ignored by the compiler if they are not recognized, so they are a convenient way to communicate with the preprocessor. The trig and log functions are computed using CORDIC routines. This is a very efficient way to compute these functions for processors that cannot multiply or divide quickly. Instead, a lookup table is used with adds and shifts, which are much faster. I was able to speed the shifting up even more by using another lookup table that let me right shift 4 digits at a time. After setting accuracy to 24 places arcsin(arccos(arctan(tan(cos(sin(9)))))) evaluates to this: One way to measure the accuracy of calculations is with the calculator forensic found here. It also features complete support for complex numbers along with 2nd, 3rd, and 4th degree equations solving. It features classical 4 operations, logarithms, trigonometry, statistics, financial, and macros for easy programming.
Windows 10 rpn scientific calculator software#
The settings page allows the accuracy to be set from 6 to 32 decimal places. These software version has borrowed the RPN (Reverse Polish Notation) and the look&feel of those calculators. With the default of 12, trig functions calculate in about a second.
With 32 decimal places calculations take 3-4 seconds. After setting the accuracy, the program finds the largest element in the CORDIC table that is still significant, so that no time is wasted on elements that have no effect on the answer. The settings page also shows the current battery charge. When I began this project I wasn't sure how much I could fit into 16kB of firmware space. In the end it grew bigger than this and I had to use two MSP430s to hold everything.
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