Free programs
for your calculator

Programs for most current Casio models!

Download programs direct from this page for FX7400, CFX9850, FX1.0 and FX2.0 series. All are saved in *.cat format - 100% compatible with the official Casio FA-122/3 PC-Calculator software. Please email charlie @ charliewatson . com if any program fails to perform as expected after checking below for recent de-bugs/updates.

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Download programs and games straight off the net into your calculator with a mail order PC - Calc cable You can also free up your calculator memory by storing notes, programs, etc on your PC. Also available are calculator to calculator cables.

Free software
Casio Solutions recommends you download the free Casio FA-122 software to use with CFX and FX7400G+ models and FA-123 software if you use an Algebra FX model. (FA-123 will also work with both CFX and FX7400G+ models, but it will corrupt certain commands and text.)

Blame Bill if your programs now think they're security catalogs! Installing IE5 registers the *.cat extension as a security catalog file type - which means double-clicking a program now fails to open it. See technical links for help to restore things the way they were!

How to download! Try one click on the download button. If your FA-122/3 software opens automatically with the programs then fine. If anything else happens (eg white screen full of program code or error message about invalid security catalog) then return to this page, right-click the download button, save the programs onto your computer, start the FA-122/3 software and open the saved programs through the software.

	Group 1		Size	Author	Last Updated
	Discrete		19kb	Charlie Watson	15/03/2004
				This set of programs was written for the Western Australian Discrete Mathematics course. (Also has copy of NUMSEQS).
	Individual programs in these files:
	AP		Preview Finds, solves and tabulates arithmetic progressions. See Graphic Calculator Series by OT Lee for Discrete Mathematics to learn about this program and also GP below.
	FINDRULE		New! Finds best rule y=f(x) (from linear, power, quadratic or exponential) when at least 2 points stored in List1(x) and List2 (y).
	GP		Preview Finds, solves and tabulates geometric progressions. See Task 4 - Using the GP program or the link above to OT Lee.
	GTHDECAY		Preview Updated! Enter two or more data points to find the equation of exponential growth or decay in the form y = a(r)x
	LINEAR		Preview Equation of a straight line from gradient and point or two points.
	MAV		Updated! Enter time series in Lists 1 and 2, set period and this program returns graphs, moving averages, residuals, seasonal components, future values, etc. See Task 3 for worked example.
	REPAY		New! Updated! Generates complete loan repayment table (or individual row of table) for typical Discrete problems such as a loan of $1000 at 7%pa is repaid by monthly installments of $80.

	Group 2		Size	Author	Last Updated
	Calculus		13kb	Charlie Watson	15/03/2004
				This set of programs was written for the Western Australian Calculus course.
	Individual programs in these files:
	CMPLXNUM		Preview Enter complex number z in either cartesian or polar form and then convert between forms, find nth power, list nth roots and evaluate ez.
	DOTPROD		Preview Dot product of two vectors.
	EXACTVAL		Preview Displays exact values of sin, cos and tan from 0 to 180 degrees.
	LOGBASE		Converts logs to different bases.
	NWTNRAPH		Preview First store f(x) in Y1. Program then solves f(x) = 0 using Newton-Raphson method, displaying all iterations.
	NWTRPHTT		Preview Same as NWTNRAPH but also animates iterations graphically. See Task 5 - Investigating when the iteration fails.
	PBISECT		Returns equation of perpendicular bisector of two points.
	POLYDIV		Divides any two polynomials, returning quotient and remainder. See Sheet 11 for worked examples. CFX9850G version.
	POLYDIV+		Divides any two polynomials, returning quotient and remainder. See Sheet 12 for worked example. CFX9850G+ and later version.
	POLYMLT+		Multiplies any two polynomials (any order) together. See Sheet 12 for help. CFX9850G+ and later version.
	POLYMULT		Multiplies any two polynomials (any order) together. See Sheet 11 for worked examples. CFX9850G version.
	TRIGSOLV		Solves sin, cos or tan(A) = x over your chosen range (in either degrees or radians). Solutions displayed in rows with first column degrees, second column radians and third column exact multiples of pi (where possible).

	Group 3		Size	Author	Last Updated
	Applicable		19kb	Charlie Watson	15/03/2004
				This set of programs was written for the Western Australian Applicable Mathematics course. (Also has copy of MAV).
	Individual programs in these files:
	GAUSELIM		Preview Gaussian elimination of matrix A, result in matrix R, showing steps.
	LINPRG		Preview Solves linear programming problems. Enter inequalities, objective function and program does the rest. WARNING: Optimal value is always OK, but not confident this program will always return the correct coordinates - more checking still needed.
	MEDIAN		Finds the median from a grouped frequency table using linear interpolation. See Sheet 15 for a worked example.
	PDF+		Preview Updated! Five probability distributions in one quick program. Calculate, tabulate and plot any normal, exponential, Binomial, Poisson or user defined (any pdf entered in Y1) probabilities. Probabilities now displayed to 5dp instead of 4!
	RESIDUAL		Check your regression model with this small utility which calculates and plots residuals based on regression of List 2 (y) on List 1 (x).
	ROWREDA		Preview Reduces matrix A to echelon form, storing result in matrix R and indicating type of solution.
	ROWREDTT		As for ROWREDA but also shows steps in reduction. (Though rarely shows a neat path to the reduction!)

	Group 4		Size	Author	Last Updated
	Odds'n'Ends		27kb	Charlie Watson	15/03/2004
				This is a set of miscellaneous programs and utilities.
	Individual programs in these files:
	2PT LINE		New! Enter coordinates of two points and get gradient, midpoint, distance and equation of line.
	BORGS		Works out aerobic exercise heart rate targets for given age, exercise intensity and level of fitness.
	GRAPHEQN		Practice in working out a and b for y=ax+b from a graph.
	INEQSOLV		Solves single variable (linear) inequalities of the form ax+b < cx+d.
	LATLONG		Solves latitude and longditude problems - both distance from A to B or position after travelling xkm from A.
	MARKS		Enter max mark, then enter student mark(s) for conversion to % and finish with hi mark (>max) to obtain class average.
	MEANMED		Little utility to calculate mean and median for single data set without going into STAT mode.
	PERPBSCT		Calculates and draws the perpendicular bisector of any two points.
	QUADEQN		Calculates equation of a parabola from three points.
	QUADSOLV		Preview Updated! Enter quadratic in any form and have it converted into standard, completed square and factored (where possible) forms. Roots (real or complex) given as both exact and decimal values.
	RIGHTTRI		Right-triangle solver when angle and one of O, A or H is known.
	SAVOL		Solves surface area and volume problems for most prisms, pyramids, cones, spheres and cylinders.
	SIMPLOTS		Takes simultaneous equations (2 variables) with coefficients already entered in SOLV SIML [2] and graphs them to assist in interpretation of solution.
	SURDSIMP		Preview Simplifies several common types of surd expressions.
	TRAPRULE		Introduction to finding area beneath a curve using trapeziums. Store function in Y1 first. Uses Lists 1 to 3 for working.
	TRISOLVE		Preview Enter known sides or angles and TriSolve finds the rest and area. (Including ambiguous case of sin rule).

	Group 5		Size	Author	Last Updated
	Number		5kb	Charlie Watson	15/03/2004
				A set of fast running number utilities to speed up those irksome number questions.
	Individual programs in these files:
	DTF		Enter any decimal number to find exact (or nearest) equivalent fraction to tenth decimal place.
	FACTORS		Finds all factors of a number.
	HCF		Finds Highest Common Factor for two numbers.
	LCM		Finds Lowest Common Multiple for two numbers.
	NUMSEQS		Generates list of up to 50 terms of Fibonacci sequence or first 250 prime, square or triangle numbers.
	PRIME?		Determines whether a number is prime or composite.
	PRIMFACT		Finds all prime factors of a number.

	Group 6		Size	Author	Last Updated
	Simulations		18kb	Charlie Watson	15/03/2004
				A set of programs to simulate a variety of situations and hence obtain sets of experimental results.
	Individual programs in these files:
	BROWNIAN		Simulates Brownian motion.
	COINTOSS		Simulation which counts number of H and T when a coin is tossed.
	CONHEADS		Simulates tossing coin and records runs of consecutive heads. Results displayed in table and graph.
	DECAY		Simulates radioactive decay of anywhere between 1 to 1000 atoms. Decay continues until all radioactivity has ceased. Results summarised in table and graph.
	DICEROLL		Simulates rolling a die until a chosen number appears.
	DOUBLE6		Counts number of double 6's in up to 250 tosses of a pair of dice, recording each toss in Lists 1 and 2.
	DRAWCARD		Visually simulates drawing cards from a shuffled pack with or without replacement.
	GUESS		Collects up to 50 student estimates of 5 seconds and puts them into a list for analysis. The worksheet Task 2 - Estimation of 5 seconds - Data collection and Normal distribution illustrates a possible use.
	HEADS		Cumulative probability of tossing a head 99 times. Relative frequency is graphed.
	LONGRUN		Simulates long run experimental relative frequency for an event with probability P.
	ONE DICE		Simulates tossing a single die up to 96 times. Live update of count.
	REACT		Collects up to 50 measurements of your reaction times and puts them into a list for statistical analysis. See example worksheet Task 1 - collection and analysis of reaction times.
	TOSSES		Choose how many coins to toss and how many trials. This simulation then displays the number of heads obtained in a table and graph.
	TWO DICE		Simulation of tossing a pair of dice up to 250 times. Column graph grows as the experiment progresses. Results summarised in table.

	Group 7		Size	Author	Last Updated
	EA-100 data		44kb	Charlie Watson	15/03/2004
				This set of programs is for use with the EA-100 Data Analyzer. For detailed instructions on using this collection, read the Data Logging page.
	Individual programs in these files:
	GETDATA		This simple to use program is for data collection using the three probes supplied with the EA-100 data analyzer. If you are new to data logging, then this is the program to start with.
	GETDATA2		The big brother to GET DATA, allowing the use of any type of probe, any combination of up to 4 probes, individual calibration or conversion equations for all probes and use of one probe to trigger data collection. Real time graph plotting is possible either against time or one probe against another.
	GETITEM		Single or paired data collection with a single probe. Each sample is individually triggered from the calculator.
	GETPH		This program is specifically for use with the Vernier pH system, allowing real time monitoring and graphing of the pH of solutions over the 0 to 14 range.
	GETPULSE		Specifically for use with the Vernier heart rate monitor. Allows continuous monitoring and recording of an individuals heart rate using an ear clip.

	Group 8		Size	Author	Last Updated
	EA-200 data		12kb	Charlie Watson	15/03/2004
				This set of programs is for use with the new EA-200 Data Analyzer. For detailed instructions on using this collection, read the Data Logging page.
	Individual programs in these files:
	EA2PH		New! This program is specifically for use with the Vernier pH system, allowing real time monitoring and graphing of the pH of solutions over the 0 to 14 range.
	EA2PULSE		New! Specifically for use with the Vernier heart rate monitor. Allows continuous monitoring and recording of an individuals heart rate using an ear clip.
	EASY200		New! This simple to use program is for data collection using the three probes supplied with the EA-200 data analyzer. If you are new to data logging, then this is the program to start with.

	Group 9		Size	Author	Last Updated
	Kissane		6kb	Barry Kissane	2/07/2000
				The source of most of these programs is Chapter 12 (Programming) in the book More Mathematics With A Graphics Calculator by Barry Kissane. (See Books). They are fairly short and intended to help you understand the basics of programming. See book for full details of programs.
	Individual programs in these files:
	ARCHIMED		Calculate an approximation for pi based on Archimedes.
	BINPROB		Makes Binomial probability distribution table.
	CALENDAR		Returns the day of week from the date.
	CARDS		Simulates collecting complete set of n cards. (Eg collector cards in cereal).
	COIN		60 simulations of tossing coin n times. Number of heads in List1.
	DEPLOT		Finds differential equation solution graphically using step method.
	DIFFLIST		Stores differences of values in List1 into List2.
	DIRECFLD		Draws direction field for differential equation. Formula in Y1.
	DISPLAY		Time v temperature data recording with EA100 unit.
	FACTORS		Finds set of prime factors of n for n>10.
	MANDLBRT		Draws user chosen part of Mandelbrot set.
	SAMPDIST		Selects random sample from data stored in List1.
	SAMPLE		Creates random samples of data with chosen probability.

	Group 10		Size	Author	Last Updated
	Ziv		9kb	Alan Ziv	2/07/2000
				These programs are also posted in *.zip format on the USA site The Casio Classroom, hosted by University of Central Florida.
	Individual programs in these files:
	AMORTIZE		Computes the standard amortization calculations.
	CMPLXPWR		Finds any power of a complex number.
	CMPLXRT		Finds and displays the n complex solutions of zn = c.
	DBLINT		Approximates a double integral numerically.
	EULER		Plots the Euler's method solution of a differential equation.
	FUNDTHM		Numerically solves the differential equation and plots the antiderivative.
	IMPGRAPH		Plots the implicitly defined graph given by F(x, y) = 0.
	LINPROG		Solves a linear programming problem by the simplex method.
	PRIME		Determines whether a number is prime or composite.
	PRIMFACT		Reports the prime factors of a number and their multiplicity.
	RIEMANN		Approximates an integral by a Riemann sum.
	ROWREDA		Row reduces Matrix A to reduced row echelon form.
	SLOPEFLD		Graphs the slope field of a differential equation.
	TRIPLINT		Approximates a triple integral numerically.

	There are 2 ways to download all the above sets of programs for all calculator models:   DOWNLOAD ALL PROGRAMS - (cat.zip), an 84k zip file - you'll need to unzip using Winzip software or similar into original *.cat format.   DOWNLOAD ALL PROGRAMS - (cat.exe), a 110k self-extracting archive if you don't have an unzipping utility. Save into your FA-122 folder and then double click the file to automatically create a folder called 'cworks' containing all original sets in *.cat format.