CAS software

Symja

The Android version is from Graphing Scientific Calculator.
It contains the Casio 991EX calculator and the Symja CAS.

The desktop version uses Java, and is from GitHub.

The manual for the physical calculator and documentation for the Symja language.

Symja for Microsoft Windows

Java for Windows is available from Portapps.
In the download panel, activate the "Version" drop-down, find the desired major version (eg. "11"), then choose the first entry under it.

After the JDK has been installed, install Symja to the same parent directory.
When complete, "JDK11.0" and "Symja_" connect to the same directory.
Warning: the "JDK11.0" directory exists only when Oracle JDK version 11.0 is installed
Create a directory beneath "Symja_" (Eg. "bin") and save the following text as a .BAT file (Eg. "symja.BAT"), there.
Caution: It is one DOS command, on one line

..\..\JDK11.0\app\bin\java.exe
		-classpath "\Language\Symja\symja_java11-v3.0.0\etc";"C:\Language\Symja\symja_java11-v3.0.0\lib\*" -Dapp.name="server" -Dapp.repo="\Language\Symja\symja_java11-v3.0.0\lib" -Dapp.home="\Language\Symja\symja_java11-v3.0.0" -Dbasedir="\Language\Symja\symja_java11-v3.0.0" org.matheclipse.io.servlet.ServletServer

Note: the text "JDK11.0" in the above file, works when version 11.0 of the JDK is installed.

The above installation should produce this directory tree:

+--	Language
	+--	Symja
		+--	JDK11.0
		+--	Symja_
			+--	bin
				--	symja.BAT
			+--	lib

To start the Symja CAS with the PortApps release of Oracle JDK, open/execute the DOS .BAT file.
To close the Symja CAS, close the browser and the DOS command window.

Warning: In version 3.1.1 of Symja, the Graphics() command is sensitive to arguments being spread across multiple lines.
Thus, the more complex diagrams must have all Graphics() arguments provided on one line. Eg.:
- draw square with tick-marks
- draw ballistic trajectory

Scripts for Symja CAS language.

Download samples of the Symja language, based on Wolfram Mathematica.

CAS software

Maxima

User-defined language for 'Notepad++' editor: Maxima 5.41

The Android version (5.41) has not been updated, and is from Maxima on Android.

The Windows version is from SourceForge.

The manual and documentation for Maxima CAS and language.

Scripts for Maxima CAS language.

Download samples of the Maxima language, based on US DoE Macsyma. Rename "*.txt" as "*.mac"

graphical revenue/expense chart - Updated 2019-Jun-25
solve for length of a triangle - Updated 2020-Jan-26
Equalize percentage use - Updated 2019-Feb-14
draw a cartoid - Updated 2021-Sep-21
Collatz conjecture - Updated 2019-Dec-15
draw exaggerated sine wave - Updated 2020-Jan-22
define e^x function - Updated 2019-Jun-10
Pretty-print very long decimal - Updated 2023-Sep-14
show continuous fraction - Updated 2019-May-23
define a Cumulative Distribution Function - Updated 2020-Feb-24
convert decimal degrees to a PlusCode using Base-N functions - Updated 2026-Mar-29
convert decimal degrees to a PlusCode using Modulus - Updated 2026-Mar-29
draw Mathics langauge sample - Updated 2026-Jan-11
calculate inverse of 2-square matrix - Updated 2021-Jun-05
show inverse of 3-square matrix - Updated 2021-Jun-05
Samples of pattern-matching - Updated 2019-May-10
Rotate a rectangle - Updated 2023-Oct-16
calculate integral - Updated 2020-Feb-08
draw sine wave using cosine wave - Updated 2025-Jan-08
draw square with tick-marks - Updated 2025-Jan-20
draw square with tick-marks - Updated 2025-Jan-20
Probability of coin-toss - Updated 2019-Jul-07
draw ballistic trajectory - Updated 2019-Nov-02
convert decimal degrees to UTM and MGRS - Updated 2025-Jul-17
solve Vignere cipher - Updated 2019-May-22
draw Taijitu - Updated 2026-Jan-11

CAS software

Emu48

The emulator needs:

ROM image ('software')
title-bar icon (emulator window)
calculator picture ('hardware')
Configuration instructions (skin)

Necessary files

Each skin is a .KML file which describes the following:

- ROM filename
- icon filename
- picture filename
- position of buttons in the calculator picture
name of files that define:

- keyboard to calculator mapping
- display colour-map

ROM images

49g - 2.10, as "rom.49g"
50g - 2.15, renamed "rom.50g"

title-bar icons; improved versions

49g, no background
50g, no background

keyboard map; ensures every skin responds to a keystroke, the same way

49g - from Real Calcs KML Scripts for Emu48: Download
50g - from Real 50g KML Script for Emu48 (High-Res): Download

colour map; ensures every skin has the same text colours

for dark display
for bright display

skins for 49g/50g

49g - from "Real Calcs KML Scripts for Emu48", bright (Rechlin)

Picture, (.png): Download
Modified configuration to use correct filename: Download

49g - "Emu H49", horizontal, bright (Perianes)

Modified picture, (.png): Download
Modified configuration to use correct filename: Download

50g - from "Calypso 2K", dark, (Reinke)

Modified picture, (.png): Download
Modified configuration to shrink on large displays: Download

50g - "True 50g", bright (Rivero)

Modified picture, (.png): Download
Modified configuration to shrink on large displays: Download

50g - "Real50g XC", dark (Rechlin)

Modified picture, dark display, (.png): Download
Modified configuration to shrink on large displays: Download

50g - "True 50g", horizontal, bright (Rivero)

Modified picture, landscape layout, (.png): Download
Modified configuration to shrink on large displays: Download

50g - "'Windows 10' theme horizontal", dark (Soares)

Modified picture, so Android application menu is visible, (.png): Download
Modified configuration to shrink on large displays: Download

50g - "Flat 50g horizontal", dark (Clayton)

Modified picture, dark display & (Rechlin) keyboard annunciators, (.png): Download
Modified configuration to shrink on large displays: Download

Scripts for HP language in the 48g & 50g models.

Download samples of the HP language, based on HP User RPL.
48g, convert decimal degrees to a PlusCode - Updated 2024-Aug-23
50g, convert decimal degrees to a PlusCode - Updated 2024-Aug-23
- The above code expects Latitude and Longitude on the stack.
48g, convert decimal degrees to UTM and MGRS - Updated 2024-Aug-23
50g, convert decimal degrees to UTM and MGRS - Updated 2024-Aug-23
- The above code expects Latitude and Longitude on the stack.

Note: Use the emu48 menu Edit:Load Object to access the downloaded file. Then, enter the HP command OBJ→ to get the program.

Scripts to convert geographic co-ordinates

Rename "*.txt" as "*.js" (Javascript code). The JS file will calculate What Free Words co-ordinates in the above "UTM-OLC WGS84 Snyder.htm" file.

This is a copy of "WhatFreeWords-Javascript-Library" from
https://cryptome.org/2021/04/

Last Updated: 2021-May-04

MGRS-OLC WGS84 Snyder.txt
Size : 29.628 Kb
Type : txt

WhatFreeWords.txt
Size : 2397.559 Kb
Type : txt

MGRS-OLC GRS80 Snyder.xltx
Size : 30.765 Kb
Type : xltx

Google_PlusCode.xltx
Size : 10.821 Kb
Type : xltx

(Microsoft spreadsheet)

A demonstration of IMW map co-ordinates.

Convert UTM to MGRS.xltx
Size : 30.47 Kb
Type : xltx

IMW co-ordinate system.xltx
Size : 18.996 Kb
Type : xltx

The Emu 42, HP 42s emulator, modified .kmi

'Emu 42' important files

title-bar icons; improved versions

HP 28s, no background
HP 42s, no background

Necessary file

Emu42 must have this file, with the correct name, to work. Place in the Emu42 directory.
ROM - download

Windows software

Windows binary (latest version): Link

Modified .kmi file

The .kmi file for Emu42 has not been updated since 2006. The original allows allows alphanumeric entry and simple calculations. But 10 calculator buttons cannot be accessed via the keyboard, causing unneccessary use of a mouse. This version fixes that shortcoming. Delete original .kmi file and place this in the Emu42 directory.
include file - download

Horizontal skin, large

Translated from SGS-L.
image - download
configuration - download

Vertical skin, extra-large

Translated from Nova1_1080x1701.
image - download
configuration - download

Vertical skin, large

Translated from Amber_X_0.
image - download
configuration - download

Vertical skin, with icons

"Real Calcs 42", (Rechlin)
modified image - download
modified configuration - download

calculator manual

How to use Emu42: manual

calculator examples

Examples of using Emu42: examples

keyboard chart

Shows additional keys for Emu42 using the modified .kmi file: Download

The Emu 42, HP 42s emulator, modified .kmi

'Emu 42' button to modified keyboard map

F1 F2 F3 F4 F5 F6 m r d s c t enter w n e back space Up 7 8 9 / down 4 5 6 * shift 1 2 3 - Esc. 0 . \ +

The DreamCalc 5.0, paid virtual calculator

'DreamCalc 5.0' button to keyboard map

shift k ← → home Ctl-C Alt-F4 n i v m f end w u p y Alt-0 j x Alt-u Alt-v Alt-d Ins , Alt-1 q Alt-2 ^ o l z ? h s c t d Alt-s Alt-r PgUp PgDn Alt-y 7 8 9 / Esc 4 5 6 * BkSp 1 2 3 - e 0 . Spc + enter

download files

Symja

Symja for Microsoft Windows

Scripts for Symja CAS language.

Maxima

Scripts for Maxima CAS language.

Emu48

Necessary files

skins for 49g/50g

Scripts for HP language in the 48g & 50g models.

Scripts to convert geographic co-ordinates

'Emu 42' important files

Necessary file

Windows software

Modified .kmi file

Horizontal skin, large

Vertical skin, extra-large

Vertical skin, large

Vertical skin, with icons

calculator manual

calculator examples

keyboard chart

'Emu 42' button to modified keyboard map

'DreamCalc 5.0' button to keyboard map