HP39 Files
The first size listed is the downloaded file size and the second size listed is the size on the calculator.
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HP39 Files The first size listed is the downloaded file size and the second size listed is the size on the calculator. |
There are 377 files totaling 124,107 KB in this category.
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Solve inequalities using a number line.
Solve 2X2 systems of linear equations using substitution, linear combination, and Cramer's Rule.
The HP 39/40 calculators do not offer a RPN calculation mode, which otherwise is a hallmark of HP calculators. This program implements a scientific RPN calculator providing a four-level RPN stack and the real number functions of the HP 39.
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Three-dimensional plotter.
This is a little movie/joke for the HP-39/40G. It's ported from the TI-83 version and includes the source code!
This is a Dutch program that solves the 'ABC Formule'. It's made in HP-Basic and is designed especially for HP-40G users.
Investigate rigid transformations of seven basic functions: y=x, y=x^2, y=x^3, y=|x|, y=x, y=1/x, and y=1/x^2.
Allows you to set an alarm to go off at the given time, though the app must be running for it to work.
Al Bhed is a language spoken in the Playstation 2 game final fantasy X. To translate this language to English you have to collect primers. These magazines are scattered all over Spira. If you missing a lot of primers or you have just begun your journey and you want to know what the Al Bhed say to you, use this program.
Investigate the parameters A and B to see how they effect the functions y = Asin(Bx), y = Acos(Bx), y = Atan(Bx), y = Asec(Bx), y = Acsc(Bx), y = Acot(Bx).
Mario-style side-scroller. Pick up the presents and give them to Daisy.
Solve for the missing angle given a pair of complementary angles, a pair of supplementary angles, or a triangle.
Animation of two seals flipping a ball back and forth. A lot of fun for a gifted group - if you'd like to compose your own then documentation is included in the ZIP files on how to produce animations on the calculator, and on the PC using the ADK (38G only).
Explore Archimedes' method for approximating the value of pi by comparing the area of a regular polygon to the area of the corresponding circumscribed circle.
Multiply first degree monomials and binomials.
A simple breakout game.
Roll a ball down a track and try not to let it fall off. Jump, accelerate, decelerate, go left or go right. This is a really fun game!
Roll a ball down a track and try not to let it fall off. Jump, accelerate, decelerate, go left or go right. This is a really fun game! Includes seven tracks and a level editor.
One or two player Scorched Earth style game. Includes map editor, random map generator, prebuilt maps, and optional sound.
Explore stretches, shrinks, and translations of seven basic graphs.
Adaption of a game sometimes known as "Gorilla". A lot of fun but a bit slow, since it's written entirely in HPBasic.
An impressive combination of Tetris and Pipes with grayscale graphics and a mouse-style interface.
This aplet contains sets of bivariate data which have the same summary statistics but totally different 'shapes' when graphed. They illustrate the need to rely on more than just the stats when deciding on whether a linear model is appropriate!
BlackJack for the HP 39/40G!
This program is based on the 'Blood Alcohol Concentration Level' as it will calculate your BAC Level when you enter your details and required vars, i.e.: drink type. Blood Alcohol Concentration Level is a way of finding/measuring the amount of alcohol in your blood stream. (It's best to stay below .1)
Created by a French user, after making a bet with friends that he could design a game in machine language within only 1 hour. The purpose of the game is to get out of the labyrinth and to blow up the other player with bombs. You can catch bombs or bonuses to improve your bomb damages. For 1 or 2 players.
Boulder DasHP, a game where you are in a mine and must get the diamonds without being hit by boulders.
A graphical demonstration of the Buffon's Needle method for estimation of pi.
Try to make burgers; adaptation of an old CBS Colleco Vision game. With sound.
The program performs calculations of angles, distances, area and volumes of any figure. It can draw figures and keeps the points for possible modifications or calculations.
Explore relationships among the different data to investigate different cars, the cost, mpg, etc
Supplied along with a worksheet, this aplet encourages the student to deduce the Chain Rule for themselves via a series of pre-loaded examples.
Periodic table for the 39g+. It will run on the older 39G, but it will be slow. It has 11 properties for each element and is designed to be compact.
This aplet uses chords of diminishing lengths to find the limiting gradient at a point. A worksheet leads the student into discovering differentiation. (Used to be called 'A Different Slant').
School activity for investigating some interesting graphs which create Christmas tree style plots.
This aplet investigates the common charity game consisting of tossing of a coin onto a square grid. It requires only knowledge of quadratic functions and can be used at a number of levels: to illustrate the convergence of experimental values towards theoretical ones, to investigate fitting a quadratic curve to experimental data, and to introduce the idea of a probability function.
This aplet takes a vector problem involving two objects having an initial position and velocity and analyzes it as 'closest approach' style problem. A test tool rather than a teaching tool.
Columns (Tetris-like game) clone.
Grayscale Columns clone. An adaptation of the game by Spartacus.
Investigate the conic sections in general and in standard form.
Investigate the polar form of the graphs of the conics to discover how changing the eccentricity and distance from the focus to the directrix effects the graph of the conic.
Find the midpoint, distance, and slope of a given line segment.
Impressive sampled sound demo. A person speaks in French, saying "Ah que coucou", followed by a coucou and laughing.
Uses upper and lower rectangles to find the areas under supplied curves. A worksheet then takes the student through the process of deducing the rules of integration.
Side-scrolling game in which you must bounce an apple over rocks, picking up dots (seeds?) to receive points. Has excellent grayscale graphics.
This aplet uses visual methods to illustrate and introduce the Poisson distribution, through the sowing of dandelion seeds into a large patch of ground, which is then broken up into unit squares.
Explore patterns and symmetry by ordering pairs of digits from the decimal expansion of certain fractions that have periodic decimals.
Defuse bombs as quickly as possible before they explode.
Pick up all the diamonds, and advance to the next level (includes 50 levels). Inspired by Diamonds for the Macintosh by Oliver Dreer.
Find the distance between two points on in a coordinate graph.
This DoEasy-program shows you the Horner-Calculation of polynomial function-values. In case of f(x)=0 the program displays the factorized polynomial-function of the entered function. It's easier than it sounds like. View additional help for more information.
Preview II of a forthcoming grayscale implementation of Doom with two monsters, four weapons, and a large level.
An adaptation of the DopeWars PC game, which is an ameliorated version of Drug Wars. Buy and sell drugs, make cash, and avoid cops; those are the basic rules.
Explore points, slopes and equations of lines that enclose the figures. It is also possible for the student to investigate the piecewise functions that would create the exact drawing.
Dr. Mario clone in grayscale.
Explore relationships among the different data to predict the percent of iron in a given sample.
Drugwar is a quite basic game: you have to earn money by selling drugs. You also can buy weapons to fight with the cops.
Like the computer game Dune 2. This is a war game.
Not really an e-book, but a love poem written by Robin Mellor.
The best e-book so far. This is an 18 pages long psychological thriller.
An e-book written by Preston Chaderton. The story goes about an exiled Neo Wolf trying to avenge the death of millions of people by invading his enemy's base. Not finished yet, but will be soon.
Excellent space strategy game in 4 grays.
Symbolically factor second degree polynomials in the form Ax^2+Bx+C.
Game where you must move the ball in the holes before reaching the top of the screen. Bonus will help you, very fun! You must stand alive as long as you can before your ball gets scratched!
Program that shows the flight of an object based on the height from which it is trown, speed, angle, also wind and gravity.
Determine an approximation for the golden mean using the ratio of width to length of the sides of the golden rectangles.
This is a small financial program (it's only 1.4kb). You enter the principle, rate and time and the program returns the monthly payment, total amount that is paid and the total interest.
This library will add the built-in financial functions from the TI-83(+) to the 39/40. This is only a Dutch version and this library is not finished yet; there is still lot to be done.
A pretty cool shoot 'em up.
This small game "reads" your thumbprint and displays your fortune. Great for a momentary distraction.
The classic! You are a frog and you must avoid the cars, to save your little froggies.
A copy of the Function aplet with a vast number of extra features added via an amended VIEWS menu
A brain game in 4 shades of gray. You have to make all pieces gray.
This aplet is only useful for Dutch speaking HP 39/40G users. It includes all formulas that students need to use when they have only one hour physics in the 5th grade.
Lets you play the built-in and hidden games of the HP 39/40G written by Jean-Yves Avenard and Cyrille de Brebisson.
An aplet of some fun games, including Tetris, Arkanoiid, Xennon, Dyna Blaster, and Skwik.
Grob filer is an excellent grob manager. It has the ability to copy, erase, view and encrypt grobs. Its downside is that is written in User RPL, thus slower.
You try to guess a number between 1 and 1000.
Write the equation of a rational function given horizontal and vertical asymptotes and a root.
Write the equation of a line in slope-intercept form when given two points.
This program gives your calculator a way to sit and laugh at you.
This is a lite version of the library originally developed by Martin Lang, includeing a hexadecimal and a binary calculator, two percentage functions and an alpha lock utility. Written in System RPL.
This is a simple predator-prey simulation with owls and mice that takes place in "Hoot Woods." Potentially useful for bio/ecology students.
RPN simulator for the HP 39g+ series. Function wise, it is an equivalent of between an HP 35 and 45. Programmed in basic, and can be run from any applet.
Side-scrolling game based on the computer game, where you try to kill four worms of the opposing team with many weapons (bazooka, banana bomb, kamikaze, etc.).
HPlanetarium is a free (GPL) planetarium for the HP 39/40/48G/49/50 in which you can move, zoom and unzoom the sky map "in real time". Equatorial/azimutal coordinates, rise/transit/set times, elongation, magnitude and diameter can be computed for main planets. You can also point a Meade telescope, and there is an ephemeris generator. Source code for the HP 49 is provided. A light version (only 24 KB) is available for the HP 48G.
A good minehunter game, in 4 grays, with some interesting options.
A good shoot 'em up, 4 shades of gray, and three long levels.
You are an ice cube and must explore islands to pick stuff up. In grayscale!
Another Arkanoid/Breakout clone, in grayscale.
This aplet provides simple drill practice for students learning the laws of indices, with the option of including negative powers. It presents students with practice problems in correct mathematical layout and then allows them to enter the simplified answer. There are a wide variety of styles of problems. It will then tell them if they are right or wrong, offering a second chance if needed.
This is a copy of the function aplet with the additional ability to graph inequalities (linear/non-linear) for F1, F2 and F3(X). These can be overlaid to show intersections or unions.
Another shoot 'em up, with upgrades to buy.
Calculates quantiles of Normal, Chi-square, Fisher and student distributions.
Explore inverse relations and functions. Analyze relations and functions graphically, numerically, and symbolically.
Like the Jezz Ball PC game. The goal is to fill up the screen without hitting the moving balls. Each level gets harder by the increasing percentage of the screen that must be filled up and the increasing amount of balls.
Implementation of Jezz Ball. Includes source code.
A System RPL program that contains all music files available on the HP-39/40G!
Probably the best Tetris clone in grayscale.
Allows you to set the internal keybounce time to either reduce accidental double-presses of keys or increase the speed at which you can press the same key twice.
Another French graphics demo.
System RPL library for the HP 39/40. Provides 36 new functions, including hex/dec conversion, physical constants, unit conversions, time and date functions, calendar, time value of money, and a few EE functions. Also has a number of functions useful to programmers.
Solve oblique triangles by applying the laws of sines.
Apply the laws of exponents to multiply and divide monomials and to raise a monomial to a power.
A cellular life simulation.
Identify the slope and the y-intercept given a linear equation, and will describe the various effects positive, negative and zero values have on the graph.
An aplet similar to the Quadratic and Trig Explorers (but not as fast) which allows the student to explore linear graphs. The equation of the graph is displayed at the top left corner of the screen and the student can change the gradient and y-intercept using the arrow keys. Intercepts are shown on the screen.
The student nominates what they think is the line of best fit for a set of bivariate data. They can then adjust the line interactively, seeing the effect on the sum of squares of residuals.
Graphically solve a linear inequality.
This aplet visually solves linear programming problems, finding the vertices of the feasible region and the max/min of an objective function. The final stage of finding the vertices is a bit slow but the result is very impressive. It's a wonderful tool for teachers marking test papers - it lets you easily check whether a student's feasible region is correct if they have their constraints wrong. That's why I orginally wrote it: sheer frustration after the 20th paper that had to be reworked from scratch to assign part marks.
Puzzle-type game where you try to get all the lights turned on, but turning on one turns off or turns on others.
This is one of those "must have" aplets for students who solve problems involving borrowing money and making regular repayments. Once you have it on your calculator all you have to do is store the amount borrowed into P, the interest rate in to R and the amount being repaid into A and the aplet will then show you the remaining principal and interest charged each year/month/quarter.
It's a Magic 8 Ball for the HP-39/40G.
The classic platform game now on HP 39/40! 4 characters, a lot of levels, a lot of fun!
An applet to simplify several basic matrix operations. This version only is in Dutch.
Explore a labyrinth to find the treasure, then escape it.
One of the best breakout games on the calculator. This version includes a lot of bonus, 2-player mode, high scores, and more.
It's the classic memory game for your HP 39/40G.
A game like Simon. You have to repeat the good sequence.
A compilation of 3 minigames that I have converted, packed into a library.
Solve for the midpoint on a line or a coordinate graph.
Music interpreter which plays polyphonic music, ported to the HP 38/39/40. Not compatible with the ARM-based models.
The HP 48G MINEHUNT command ported to the HP 39/40G.
Just like Minesweeper for Windows. In grayscale, yet it's only 1.2k.
Graphics demo with a lot of cool real-time morphing effects.
This program tells the time and date that are set up on your calculator.
Might be used as some sort of protection against people who do not know how to use HP calculators.
School activity designed to investigate the visual representation of the iterative process, and the effects on the iterative process of choosing "unstable" initial values.
Explore the relationships among voltage, current, and resistance. The ideas of Ohm's law and power will also be explored.
Simplify expressions using the order of operations.
Implementation of the Othello board game. Now ported to run on all HP 48's, the HP 49, and the HP 39/40.
Excellent PacMan clone with a large, scrolling screen.
Pacman clone with 3D graphics! Needs 120k free memory! Ports to 48G, 49G, and 39/40 by Lilian Pigallio.
Write the equation of a line parallel or perpendicular to a given line through a given point.
This program stores the information about people on you calculator based on three scales: soul, brains, and body. Requires some program writing ability, what you will need to do is explained in the file.
Write ratios that will solve problems of the form A is B% of C.
Explore the four different parameters that effect the graph of y=Asin(BX+C)+D and/or y=Acos(BX+C)+D, and will be able to analyze these symbolically and graphically.
Investigate the parameter C to see how it effects the functions y = sin(x+C), y = cos(x+C), y = tan(x+C), y = sec(x+C), y = csc(x+C), y = cot(x+C).
"Shoot the aliens, before they shoot you" could be a short description of this game. This game is similar to Round 42 for the computer, but with only five levels.
This is an picture of the Final Fantasy X character Rikku. 131x128 pixels.
Picture of the famous couple in FFX. Picture is bigger than the picture next to this text.
Recognize and name the coordinates of points.
Graph polar equations and be able to analyze these symbolically and graphically.
This program multiplies two polynomials, given the number of coefficents in each one of them. Might work with complex numbers.
The first ever made videogame, now on HP 39/40.
An essential tool for any student going into an exam which involves probability functions. This is two copies of the Solve aplet with equations pre-entered for Discrete and Continuous probability density functions respectively. Covers the Binomial distribution (individual and cumulative), the Poisson distribution (individual and cumulative), the Exponential function, the Normal distribution, plus more.
Investigate the kinematics equations that govern the motion of an object which is fired at an angle with a given velocity.
An adaptation of the Puissance 4 game. 1 or 2 players
A simple puzzle game; just put the pieces in the right order.
Bust a Move puzzle game with three modes: puzzle mode, practice mode and vs mode. In this mode you can connect two calculators by wire or IR.
The adaptation of the arcade game. This is a great game, with over 100 levels!
Determine the nature of the roots, predict how many times, if any, the graph of a parabola will cross the x-axis, and find the solution(s).
Investigate the effects of changing A, H, and K in the vertex form of a quadratic function. Analyze the effect of these parameters symbolically and graphically.
This program uses the quadratic formula to solve a quadratic equation and gives the exact answer, also gives imaginary answers.
This is an aplet which lets you explore the relationship between the focus and the directrix of a quadratic equation/graph.
Solve for the value of x using the quadratic formula.
Game where the object, is, when the gunslinger reaches for his holster, to press ON to shoot him. The difficulty increases each level. Sound is optional and very western.
A great racing game, with 32 circuits. The first 3 times are saved, compete with your friends!
Investigate rational functions and the asymptotes associated with the function.
Reflect graphs of functions about the y-axis, x-axis, origin, and the line y=x.
Does something with vectors.
Compute residual values and display their graph as another way to determine how good the regression equation fits the data.
This software is designed to calculate dates on the HP 39/40G, including the number of days between two dates and the date = date + number of day. A small integrated database will allow you to integrate your family birthdates or your preferred dates.
This program simplifies roots (not only square ones), gives you the exact and rounded answer.
A cool graphics demo featuring realtime animated 3D graphics. It has a fast line routine, Sin/Cos lookup code, uses 1.7 fixed point math to do the calculations, and double buffering for the animation.
School activity designed to investigate the use of elementary row operations in the reduction and/or solution of a 3 by 3 system of linear equations expressed as an augmented matrix.
This aplet converts your 39/40 to a complete RPN scientific calculator, it has the classic 4-level stack plus LASTx. It's written in System RPL and runs with no noticeable lag. This version supports real numbers only.
The S-Chip emulator, packaged with lots of games.
This program saves the real variables to a list, so it is easier to send them to the PC for backup, also takes the variables from the list.
Password protects your calculator.
A program to set the time on your 39gs. Use "DATE", "TIME", "DISPTIME" to easily set the machine's time.
School activity designed to simulate sets of observations on various discrete and continuous random variables. These can be used in test problems or exercises, or as aids in teaching the topic of random variables.
One of the features lacking on the 39/40 has always been a quick and easy solver of simultaneous linear equations. This fantastic aplet, written in System RPL for speed, fills in this hole perfectly.
School activity designed to investigate the definitions of sine, cosine and tangent on the Unit circle. These can be used in test problems or exercises, or as aids in teaching the topic of random variables.
Find the slope of a line on a coordinate graph.
School activity designed to investigate the production of a field of slopes from a derivative function stored in F1(X), and the drawing of multiple possible integrals given starting points (x,y).
Snake/Nibbles implementation. Eat the fruit and grow whilst avoiding yourself and the walls. Features 10 speeds and recording of high scores.
As a "garbage collector," your task is to collect lost objects and push them onto free storage locations through a puzzle. This is a fun, 50-level game.
Wow! You must shoot the aliens, in a first-person view! Include 9 levels.
A complete statistics package for the 39/40G. Does Chi^2, F-tests, ANOVA, binomial, geometric, Poisson, normal probability plots, residual calculation, a whole lot of simulations, and a whole lot more. Has built in help for all commands in the NOTE.
Stock Master is a game of buying and selling stocks. You can buy and sell stocks until you go bankrupt.
You have to jump over school bus with your moto, avoiding the helicopter and the bridge.
Evaluate expressions when given values for the variables.
An adaptation of the Super Mario game. Fun, but hard to play. Includes 2 versions, with different levels.
School activity designed to investigate a problem in optimization where they are required to maximize the volume or minimize the surface area by manipulating a single variable.
School activity designed to investigate the change in the gradient of a tangent line as the point of tangency moves along the function.
The game of taquin; put the letters in the right order.
This is Tetris2, a very nice Tetris game for all HP graphing calculators (38G, 39G, 40G, 48, 49G). Some features: small size (<6.5kb though a very good size/performance ratio), very close to the original TETRIS gameplay, configuration of the gameplay + three game modes, 2-Player games via serial I/O (IR or wire), runs well on Emu48 (sp 8+).
This little program launches the hidden game that's built into the 39/40 and displays your score at the end.
An adaptation of Tetris which was produced specifically for the 39g+, written with HPGCC.
This is a collection of small programs you can type in yourself or download. They perform a multitude of small tasks, some that are so easy you'll wonder why I wrote a program for them, some that are really cool. Mostly math programs, for numeric, trigonometric, complex, linear, and cubic calculations, plus probability, matrix, finance, statistics, and more.
This is a screensaver based on the movie 'The Matrix'. Features cool effects like scrolling down the screen, splash screens and many other things.
It's Tic Tac Toe for the HP-39/40g! And this new version is worth checking out! Smaller, better and optimized code for maximal playing pleasure. The bug is gone and there are more options than ever! For the interest of (beginning) System RPL programmers the code is included and commented!
This is an ingeneous and excellent add-on that is basically a really neat total waste of time :-) When you download the library to your calculator it will put a ticking clock at the bottom of the HOME view. It displays both the date and the time (once you've set them) and uses both 12hr and 24hr time format and both US and European date format.
Forgot your watch again? Time is a program that tells you the date and time in understandable terms.
School activity designed to easily and quickly analyze Time Series style data, by calculating moving averages (3, 4 and 5 point), seasonal residuals, trend lines and seasonally adjusted data. It more a working tool, rather than an investigative tool.
This aplet displays your timetable (up to seven periods.) To set it up you will need to edit one of the programs and add a number for each of your subjects, then enter these numbers into Matrix0.
A graphical display of the solution to the Towers of Hanoi puzzle, written in System RPL.
A bunch of cool animated graphics demos.
You may be aware that one of the problems with the HP39G and HP40G is that whole rows or columns of keys will occasionally stop working. If you can still access the APLET view and the screen keys then this aplet will transfer you into the Program or Note views so that you can use SAVE/RECV to save them to a PC (assuming that you have a cable) before getting your calculator replaced.
This is an easy adaption of the Parametric aplet which allows the student to investigate geometric transformations using 2x2 matrices. It is a fantastic teaching tool - my class deduced all the basic 2x2 transformation matrices for themselves in less than an hour.
Fully-grayscale adventure game with a mouse-like interface. One of the most impressive games ever made for a calculator.
An adaptation of Tron, with a lot of game modes, 2P mode, high scores, and a lot of options. This old version is included because of its lower memory requirement.
An adaptation of Tron, with a lot of game modes, 2P mode, high scores, and a lot of options. This version includes many new features!
The classic Tunnel, you must avoid the walls.
Another version of Tunnel.
Another version of Tunnel, but I think this version is the best.
Car racing game. View the track from above.
Lets the HP 39/40/48/49(+) connect to the Internet at 9600bps, using a mere modem. Includes some mail and news posters, and a mail fetcher. Also appears to work over IrDA on the 49g+.
School activity designed to investigate the relationship between the position, velocity and acceleration vectors for functions defined in the form (x(t),y(t)).
When a mole pops out of one of the six holes, "whack" him with the corresponding menu key. The goal is to get more than half the moles per level.
Whirling animation. Original author unknown.
Based on the famous television series here is the game for your HP-39/40g! Answer fifteen questions correctly and you will become a euro millionaire!
Minehunt clone with grayscale graphics and mouse input.
Beta version of a very well designed Zelda clone, with excellent graphics and gameplay. Not yet complete, but close.