-This website contains several programs that I've written for this wonderful pocket-calculator: the HP-41C/CV/CX
-Some of these programs are very slow on a real HP-41, so it's sometimes better to use them
on a good emulator like V41 - written by Warren Furlow. See www.hp41.org
-You can convert the text files to raw files with http://www.hpmuseum.org/software/hp41uc.zip
or https://sourceforge.net/p/hp41uc/code/ci/master/tree/Win32App_x86/Win32App_x86.zip?format=raw
-The HP41-memory may be increased a lot with the modules built by Diego Diaz like NoV-64. See www.clonix41.org
-Another alternative is the new fantastic 41CL created by Monte Dalrymple. Cf www.systemyde.com/hp41/
-Most of these programs will also run on an HP-42s and DM42
-And with the
excellent free42
, they will run more than
5000 times faster !
-The WP34s created
by Paul Dale, Walter Bonin
and Marcus von Cube may also be
used with minor modifications of the
HP41 programs.
-Though not
so fast as free42, it is much faster
than the HP41.
-And it is certainly
the most powerful purely RPN
calculator.
-Many programs will also
run with RPN-25 CE: cf
Willy Kunz http://www.cuveesoft.ch/rpn25/index.html
-I hope that these routines will be useful ...
-If
you want to learn the HP-41 programming
language, I strongly recommend
the 3 excellent books:
[1] Philippe Descamps & Jean-Jacques Dhenin
, "Programmer HP-41" - PSI
- ISBN 2-86595-056-5 ( in
French )
[2]
Keith Jarett - "Synthetic
Programming Made Easy" - Synthetix
- ISBN 0-9612174-0-5
[3]
Ken Emery - "HP-41 M-Code
for Beginners" - Synthetix - ISBN
0-9612174-7-2
>>> The following
pages have been recently added
or updated:
• Astronomical Ephemeris(IV) ( 2024/04/12 )
• Heliocentric Coordinates of the Giant Planets ( 2024/04/03)
• Terrestrial Geodesic Distance(3) ( 2024/04/01 )
• Min-Max Line ( 2024/02/20 )
• Hugelschaffer Egg ( 2023/12/19 )
• Numerical Integration ( 2023/11/23 )
• Numerical Differentiation(2) ( 2023/11/07 )
• Heron Formula ( 2023/10/30 )
• Astronomical Ephemeris(V) ( 2023/10/13 )
• Equinoxes & Solstices ( 2023/09/14 )
• Ellipse Perimeter ( 2023/09/03 )
• Age of the Universe & Redshift -> Distance ( 2023/07/24 )
• Terrestrial Geodesic Distance(4) ( 2023/06/27 )
Analytical Methods
• Continued Fractions
• Difference Equations
• Discrete Constrained Optimization
• Downhill Simplex Method
• Extrema
• Linear & Non-Linear Systems
• Nested Radicals
• Successive Approximations Method
• Sums & Series
Arithmetic
• Apéry Numbers
• Base Conversion
• Batrachions
• Bell Numbers
• Bernoulli
Numbers
• Binomial
& Multinomial Coefficients
• Catalan
Numbers
• Decimals
of e
•
Decimals
of PI
• Decimal
to Fraction
• Diophantine
Equations
• Euler
& Eulerian Numbers
• Factorials
• Farey Sequences
• GCD , LCM
, Bezout Identity
• Golomb Sequence
•
Harmonic
Numbers
• Kaprekar
Series
•
K-Fibonacci
Numbers
•
Lobb Numbers
• Modular Arithmetic
• Number
of Partitions
•
Palindromes
• Pell Equation
• Permutations
• Primes &
Number Theoretic Functions
• Ramanujan
Tau Numbers
• Square-Roots
& Powers
• Stirling
Numbers
Astronomy
• Astronomical Ephemeris• Astronomical Ephemeris(II)
• Astronomical Ephemeris(III)
• Astronomical Ephemeris(IV)
• Astronomical Ephemeris(V)
• Astronomical Ephemeris(VI)
• Astronomical Ephemeris(VII)
• Astronomical Ephemeris(VIII)
• Barycentric Dynamical Time
• Binary Stars
• Comets
• DeltaT
• Eclipses
• Ephemerides & Chebyshev Polynomials
• Equinoxes & Solstices
• Gravitational n-Body Problem
• Gravitational n-Body Problem(2)
• Great Planetary Conjunctions
• Heliocentric Coordinates of the Giant Planets
• Illuminated Fraction of the Moon's disk
• INPOP Ephemerides
• INPOP-HP41 Ephemerides
• Jovian & Saturnian Satellites
• JPL DE422-423-424 Ephemerides
• JPL-HP41 Ephemerides
• Kepler's Equation
• Local Solar Time
• Moon's Nodes
• Nutation
• Obliquity of the Ecliptic & Nutation
• Orbit Determination
• Orbital Elements from an Equinox to another one
• Parallax
• Phases of the Moon
• Planets + Jovian & Saturnian Satellites
• Planets in Perihelion and Aphelion
• Precession
• Refraction
• Refraction2
• Refraction3
• Rise Transit Set
• Satellites of Jupiter
• Satellites of Jupiter, Saturn & Uranus
• Saturnian Satellites
• Smallest Circle containing 3 Celestial Bodies
• Solar System Barycenter
• Transformation of Coordinates & Precession
• TransNeptunian Objects
• TransNeptunian Objects(II)
• Years & Months
Calendars
• Cyclical
Calendars
• Date of Easter
• Hindu Calendars
• Jewish Pessah
• Julian &
Gregorian Calendars
•
Other
Calendars
Complex & Hypercomplex Numbers
•
Anionic Elliptic Integrals
•
Anionic
Functions
•
Anionic
Orthogonal Polynomials
•
Anionic
Special Functions(I)
•
Anionic
Special Functions(II)
•
Anionic
Special Functions(III)
•
Anionic
Special Functions(IV)
•
Anions
•
Bionic Orthogonal Polynomials
•
Bionic Special Functions
•
Bionic Special Functions(II)
•
Bionic Special Functions(III)
•
Bionic Special Functions(IV)
•
Bions
( Complexified
Anions )
• Catalan
Quaternions
•
Complex
Derivatives
& Riemannian Manifolds
• Complex
Functions
• Complex
Hypergeometric Functions
•
Harmonic
Numbers
• Lambert-W
Function
• M-Code
Routines
for Hypercomplex Numbers
•
Octonions
• Quaternions
• Quaternionic
Carlson Elliptic Integral
• Quaternionic
Discrete Fourier Transform
• Quaternionic
Jacobian Elliptic Functions
• Quaternionic
Linear Systems
• Quaternionic
Orthogonal Polynomials
• Quaternionic
Special Functions
• Quaternionic
Special Functions(II)
• Quaternionic
Spheroidal Wave Functions
• Quaternionic
Weierstrass Elliptic Functions
•
Sedenions
• Sylvester
Quaternion
Equation
• Systems
of Quaternionic Equations
Differentiation & Integration
• Arc Length of a curve• Carlson Elliptic Integrals
• Bulirsch-Stoer Method
• Complex Derivatives & Riemannian Manifolds
• Curl-Divergence-Gradient-Laplacian
• Differential Geometry
• Differential Geometry(2)
• Diffusion Equation
• Double Exp Integration
• Double Integrals
• Elliptic Integrals
• Euler-Lagrange Equation
• Explicit Runge-Kutta Methods
• Fractional Integro-Differentiation
• Garden-Hose Method
• Gaussian Integration
• Gauss-Kronrod Integration
• Gill-Runge-Kutta Method
• Gravitational n-Body Problem
• Gravitational n-Body Problem(2)
• Implicit Runge-Kutta Methods
• Integral Equations
• Integrals over a Sphere
• Multiple Integrals
• N-th Order Differential Equations
• Numerical Differentiation
• Numerical Differentiation(2)
• Numerical Integration
• Numerov's Method
• Optimal 4th-order Runge-Kutta
• Partial Differential Equations
• Poisson Equation
• Romberg Method
• Runge-Kutta -> Runge-Kutta-Nystrom-General ODEs
• Runge-Kutta formula of order 10
• Runge-Kutta formula of order 10 (2)
• Runge-Kutta-Nystrom formula of order 10
• Runge-Kutta-Nystrom Methods
• Special Runge-Kutta Formulae
• Systems of Differential Equations
• Taylor Series
• Triple Integrals
The Earth
• Anchorage Water-Level• Bombay Water-Level
• Brest Water-Level
• Courseulles Water-Level
• Geodesics on a Triaxial Ellipsoid
• Geodesics on a Triaxial Ellipsoid(2)
• Geodesics & Loxodromes on a Triaxial Ellipsoid
• Geogravity
• Gravity on a Triaxial Ellipsoid
• Great Elliptic Arc Length
• Harmonic Constituents
• Hong-Kong Water-Level
• Loxodromics
• Positional Fix
• Terrestrial Geodesic Distance
• Terrestrial Geodesic Distance2
• Terrestrial Geodesic Distance3
• Terrestrial Geodesic Distance4
• Tides
• Tides(II)
• Tides(III)
Geometry
• Arc Length of a curve• Area of a Polygon
• Bisecting Hyperplanes
• Complex Derivatives & Riemannian Manifolds
• Complex Non-Riemannian Manifolds
• Conics
• Curvature Center
• Curvature & Torsion
• Differential Geometry
• Differential Geometry(2)
• Distance Point-Ellipsoid
• Dot & Cross Products
• Ellipse Perimeter
• Ellipsoidal Curvature
• Ellipsoid-Plane Intersection
• Euclidean Distances
• Generalized Euler Angles
• Geodesics on a Triaxial Ellipsoid
• Geodesics & Loxodromes on a Triaxial Ellipsoid
• Geometric Transformations
• Great Elliptic Arc Length
• Heron Formula
• Hyperbolic Tetrahedron
• Hyperbolic Triangles
• Hypersphere
• Hypersurface Area of a Hyperellipsoid
• Quadratic Hypersurface
• Quadrics
• Recreative Problem
• Seifert-Weber Space
• Spheres & Planes
• Spherical Coordinates
• Spherical Triangles
• Surface Area of an Ellipsoid
• Tangent & Normal
• Tetrahedron
• Triangle Solutions
• Volume & Area of a Polyhedron
Matrices
• Determinants
• Eigenvectors
& Eigenvalues
• Householder
Transformation
• Hypermatrix
• Magic Squares
and Cubes
• Matrix Operations
• Matrix
• Matrix
Pseudo-Inverse
• M-Code
Routines for Matrices
• Quadratic
Forms
• Simplex
Method
• Triangular
Systems
Polynomials & Rational Functions
• Chebyshev Approximation• Discriminant
• Elementary Symmetric Polynomials
• Factorization over Finite Fields
• Hermite Interpolation
• Lagrange Polynomials
• Least-Squares Polynomials
• Min-Max Polynomials
• Multivariate Polynomials
• Orthogonal Polynomials
• Partial Fraction Expansion
• Polynomials
• Polynomials(II)
• Polynomials(III)
• Polynomials over Z[X]
• Rational Function Interpolation
• Weierstrass-Durand-Kerner Method
Special Functions
• Airy Functions and related
Functions
• Anger
& Weber Functions
• Associated
Legendre Functions
• Bessel Functions
• Clausen's
Integrals
• Complex
Hypergeometric Functions
•
Conical
Functions
• Coulomb
Wave Functions
• Dawson Integrals
• Debye Functions
• Dilogarithm
•
Ellipsoidal
Wave Functions
• Error Function
• Exponential
Integrals & Related
Functions
• Fresnel
Integrals
• Gamma, Digamma
&
Polygamma Functions
•
Gamma
Functions(2)
• Hyperbolic
Functions
• Hypergeometric
Functions
•
Jacobian
Elliptic Functions
• Kelvin Functions
• Kummer's
Functions
• Lambert
W-Function
• Lerch Transcendent
Function
• Lobachevsky
Function
• Lommel Functions
• Orthogonal
Polynomials
• Parabolic
Cylinder Function
• Spheroidal
Harmonics
• Struve Functions
• Theta
Functions
• Toronto
Functions
• Weiersrtass
Elliptic Functions
• Whittaker's
Functions
• Zeta Function
Spectral Analysis
• Discrete Hartley
Transform
• Quaternionic
Discrete Fourier Transform
• Spectral Analysis
•
Unilateral Z-Transform
Functions of Several Variables
• Appell Functions
• Generalized
Horn Functions
• Kampe de
Feriet Functions
• Lauricella
Functions
•
Multidimensional
Zeta Functions
• Multivariate
Polynomials
• Srivastava's
Functions
Statistics
• Gini Coefficient
• Least-Squares
Approximation
•
Least-Squares
Polynomials
• Meteorology
& Markov Chains
• Min-Max
Line
• Min-Max
Polynomials
• Quantiles
• Random Number
Generators
• Statistics
& Probability
Physics
• Age of the Universe & Redshift -> Distance• Clebsch-Gordan W3J - W6J -W9J symbols
• Cosmology(II)
• Cyclic Universes
• Cyclic Universes(2)
• Diffusion Equation
• Double Pendulum
• Einstein's Twins Paradox
• Electronic Structure of 118 Atoms
• General Relativity & Cosmology
• Gravitational n-Body Problem
• Gravitational n-Body Problem(2)
• Moments of Inertia
• Poisson Equation
• Special Relativity
• Speed of Light
Games
• American Roulette• Biorhythms
• Blackjack
• Dice Problem
• Knight's Tour
• Le Compte est bon ! ( a French TV game )
• Magic Multiplication
• Magic Squares and Cubes
• Mastermind
• Mazes
• Morse Code
• N-Queens Problem
• Palindromes
• Poker
• Poker7
• Snakes & Ladders
• Solitaire ( card game )
• Sphynx
• Sudoku
• Texas Hold'em Poker
• Thirty-one ( card game )
• XOR Game
• Yams
Miscellaneous
• 564 Chords• Astrology
• Big-Ben
• Cryptography
• Data Smoothing
• Divination
• M-Code Routines
• Real Numbers -> Integer Roots
• Roman Numerals
• Short Routines
• Sorting Numbers
• Star Spangled Banner
• Traveling Salesman Problem
Links
[1] www.hp41.org
[2]
www.hpmuseum.org
[3]
http://namirshammas.com/
[4]
www.hp41.fr
[5]
www.hp41.net
[6]
www.kuiprs.nl/hp41.htm
[7]
www.clonix41.org
[8]
www.systemyde.com/hp41/
[9]
https://albillo.hpcalc.org/
[10] www.cuveesoft.ch
Contact
Jean-Marc Baillard
jmb124
at free dot fr