Rumors through the grape vine of the local ant community indicate that there is a partially empty Coke can in Zoom's room. So far many brave ants have gone in search of the mystic can, yet none have returned. They are feared to be dead. It is your mission as Bink to find a safe path to the Coke can so that others may follow. Game written by Erin; includes a nice front end by Joe Horn.
Because the built-in DIVIS command can be slow, this has six commands useful in number theory that avoid using it: τ (how many divisors does X have?), σ (the sum of ALL the divisors of X), σ0 (the sum of the PROPER divisors of X), Ad (algebraic mean of the divisors of X), Hd (harmonic mean of the divisors of X), and Πd (product of all the divisors of X).
Two little User RPL programs that convert exact integers into binary numbers and vice versa, without the roundoff errors caused by the R->B and B->R functions.
Tiny, bare-bones biorhythm generator. Calculates the number of days you have been alive to determine your Physical, Emotional, and Intellectual cycles.
Outputs the exact internal decimal value of a floating point number in CAS. It is similar to (and is based on) the author's "hex" program with the only difference being that the output of "dec" is in standard decimal format, instead of hexadecimal.
A set of programs to calculate the Decimal Period of 1/X in Base Y or the Multiplicative Order of Y (mod X). Includes a version for the Prime as well as both a User RPL and System RPL version for the 49/50 series.
A little User RPL program which answers the question, "How much bigger in one earthquake than another earthquake?". It takes two earthquake magnitudes as input and returns how much bigger and how much stronger the larger quake is.
This is actually a 49G translation of Joe Horn's Feet-Inches-Fractions (FIF) program for the 48G. This is an invaluable program for anyone who works with dimensions, allowing all the calculator functions to work while displaying the FIF result!
Put an object on the stack, and this program provides a list of all variables in the current directory that contain that object. Also includes a program to find a string in the variables of a directory.
Here's a useful utility for fetching a single key definition, very much like FETCH KEY on the HP-75 and HP-71. The following RPL routine works instantly. Shifted, alpha, and shifted alpha keys all work. The only key it won't fetch is ATTN, which is used to exit the program if desired.
Collection of six system-level utilities: STRIP (strips the << and >> off the program in level 1), PACK (packs a program's SYSEVALs into "External" form), FNXT (finds next, searching ROM/RAM for any hex digits), PRCL (recalls contents of an entire port to the stack), ->RPN (converts algebraic object into equivalent RPN object / list), and RPN-> (converts RPN object / list into equivalent algebraic object).
How would you like to win several thousand dollars (!) and win eternal mathematical fame on a par with that of Pierre de Fermat? All you have to do is prove (or disprove) "Ulam's Conjecture", also known as the 3x+1 Problem, and the Collatz Sequence, and the Hailstone Path, and Wondrous Numbers, and the Syracuse Algorithm, and many more monikers too maudlin to mention. Includes a System RPL program that returns the Syracuse Algorithm "hailstone path distance" between X and 1.
Goodies Disk 10, with programmer's grob and grayscale tools, goodies for HP 48 hackers (System RPL and assembly language), System RPL and Assembly Language Development Tools v3.1b, text-only articles from HP's BBS, goodies for the User RPL programmer, and heavy utilities for HP 48 power users.
Goodies Disk 5, with animated video programs (not games), interactive video games, HP 48 graphic objects, goodies for HP 48 hackers, mathematical utilities, text-only articles from HP's BBS, goodies for HP 48 programmers, heavy utilities for HP 48 users, and real-world, useful, non-silly stuff.
Goodies Disk 6, with animated video programs (not games), interactive video games, goodies for HP 48 hackers, mathematical utilities, text-only articles from HP's BBS, goodies for HP 48 programmers, heavy utilities for HP 48 users, and real-world, useful, non-silly stuff.
Goodies Disk 7, with Commodore Amiga utilities, animated video programs (not games), interactive video games, HP 48 graphics objects, goodies for HP 48 hackers, mathematical utilities, text-only articles from HP's BBS, goodies for HP 48 programmers, heavy utilities for HP 48 users, and real-world, useful, non-silly stuff.
Goodies Disk 9, with animated video displays (not games), more goodies from France, goodies for HP 48 hackers (System RPL and assembly language), goodies from Hewlett-Packard Company, mathematical utilities, text-only articles from HP's BBS, System RPL and Assembly Language Development Tools rev 2, and heavy utilities for HP 48 power users.
Slightly-paraphrased excerpt from the first page of older HP calculator manuals, and a "translated" (from legalese) first page of newer calculator manuals.
Listing of all 177 menus and 11 libraries in the 49G version B-1.19-6, plus the new library 2, library 171, and library 222 commands. Also lists the hierarchy of the CAS main menu.
Prints text graphically on the HP 82240A infrared printer. Also includes a tool (->STRW) to insert newlines into strings making 27-character lines for optimal printing on the printer.
Expresses any ratio of two integers as an exact decimal number, indicating which digits repeat and which digits do not repeat. Includes both a User RPL version and a faster, smaller System RPL version.
Fetches the built-in standard default assignment, including (and most usefully for) nonprogrammable and menu keys, like 2D and CLK. It is most useful when assigned to a key, so that you can easily use it to fetch menu keys.
Calculates the Möbius function, used in number theory, usually written as μ(n) but called MOB(n) here, is defined thus: MOB(n) = 0 if n has a squared prime factor; MOB(n) = 1 if n is a square-free positive integer with an even number of prime factors; and MOB(n) = −1 if n is a square-free positive integer with an odd number of prime factors. Includes both a User RPL version and a much faster System RPL version.
Key assignments can serve double purpose. For example, I never use the MATRIX WRITER application key, except to put DUP into programs. But I use ASN regularly. So I assigned the following little program to the MATRIX key. Its action depends on what mode the 48's in. When the 48 is in program entry mode (PRG annunciator on), then this program generates a DUP; otherwise, it does ASN (instead of the Matrix Writer).
This bizarre-looking User RPL program takes any real integer and returns the number of bits required to express it in binary. Mini-Challenge: figure out why it works.
Cleans up menus, sorting the current directory into directories first, then programs, then grobs, and then lists. The order within each of these groups is not changed.
Same as native ->STR function, except for names and algebraics, which get their leading and trailing single-quotes removed. Thus 'FRED' turns into "FRED", not "'FRED'".
PDQ finds best rational approximations, with infinite precision. This means it finds the two smallest integers whose ratio is equal to some target real number plus or minus some desired tolerance. In other words, it finds the simplest fraction in any given interval. Unlike other methods, it always finds the unique best answer, and uses the infinite precision of CAS long integers.
PDQ finds best rational approximations, with infinite precision. This means it finds the two smallest integers whose ratio is equal to some target real number plus or minus some desired tolerance. In other words, it finds the simplest fraction in any given interval. Unlike other methods, it always finds the unique best answer, and uses the infinite precision of CAS long integers. Two versions are included, in System RPL and User RPL, and are very similar to the PDQ Algorithm for the Prime.
Uses a converging iteration technique ported from a QBASIC program by Gérard P. Michon to calculate the perimeter of an ellipse. Also includes a version using integration that is slightly more accurate.
A poor-man's periodic table library. Given either the atomic symbol or the atomic number of any element, outputs the atomic number, full name, atomic symbol, and atomic weight.
Calculates parallel resistance accurately, avoiding catastrophic accumulation of roundoff errors in all but pathological cases (e.g. many large numbers). It's so simple that it can be entered as a user function.
Convert ratios of two integers to/from continued fractions. For example, for input '355/113', the output is { 3 7 16 } because 355/113 = 3 + (1 / ((7 + (1 / 16)))) which is written as { 3 7 16 } in continued fraction shorthand, with only the partial quotients in the list, not the numerators which are always 1. Written in System RPL.
Explains how to remove the 49G's screen cover to improve visibility without damaging the calculator in three different ways. Could be dangerous (see Dead 49G).
SSQR (Simplified SQuare Root) and QRAD (Quotient of RADicals), for converting decimals to fractions with square roots. Requires the FCTR library from Klaus Kalb.
Shows you how easy it is to tear apart an HP 48 library, completely figure out what it's for and how it was written, and even surgically remove routines from a library (manually! without TOOLS!), without having a scrap of documentation for the library itself. And then write an improved version that's shorter and faster!
Table includes both User Flags and System Flags. Definitions already in the HP literature are not included here. Flags which the user need not worry about are not included here.
An octuplet of snappy tunes: Lone Ranger part of the William Tell Overture by Rossini, a jazzy Mary Had A Little Lamb, four pieces by Bach, and more. For the S series only.
Most User RPL commands have System RPL commands that are identical but prefixed with an x, and these are used in listfiles generated by USRLIB.EXE. This cross-reference list shows all those that don't follow this pattern.
Andorra's flag and national anthem.
Rumors through the grape vine of the local ant community indicate that there is a partially empty Coke can in Zoom's room. So far many brave ants have gone in search of the mystic can, yet none have returned. They are feared to be dead. It is your mission as Bink to find a safe path to the Coke can so that others may follow. Game written by Erin; includes a nice front end by Joe Horn.
Australia's flag and national anthem.
Belgium's flag and national anthem.
Tiny, bare-bones biorhythm generator. Calculates the number of days you have been alive to determine your Physical, Emotional, and Intellectual cycles.
Brazil's flag and national anthem.
Shows the number of bytes an object takes up and displays the object type "in plain English".
Canada's flag and national anthem.
Chile's flag and national anthem.
Puts a digital clock in your CST menu.
Costa Rica's flag and national anthem.
Denmark's flag and national anthem.
A little User RPL program which answers the question, "How much bigger in one earthquake than another earthquake?". It takes two earthquake magnitudes as input and returns how much bigger and how much stronger the larger quake is.
This is actually a 49G translation of Joe Horn's Feet-Inches-Fractions (FIF) program for the 48G. This is an invaluable program for anyone who works with dimensions, allowing all the calculator functions to work while displaying the FIF result!
Finland's flag and national anthem.
France's flag and national anthem.
Germany's flag and national anthem.
Israel's flag and national anthem.
Italy's flag and national anthem.
A collection of 144 colorful pictures to load onto your Prime to show off its power to your friends!
Mexico's flag and national anthem.
Dutch flag and national anthem.
New Zealand's flag and national anthem.
A poor-man's periodic table library. Given either the atomic symbol or the atomic number of any element, outputs the atomic number, full name, atomic symbol, and atomic weight.
Poland's flag and national anthem.
Portugal's flag and national anthem.
Plays the newer 5-weapon version of the game "Rock, Paper, Scissors", invented by Sam Kass and Karen Bryla.
Three new short menu labels: rounded, ghosted, and without bottom. For both the S and G series.
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A key assignment and custom menu toolkit. Very good software, including comprehensive documentation and both G and S versions.
South Africa's pre-1994 flag and national anthem.
Spain's flag and national anthem.
Sweden's flag and national anthem.
United Kingdom's flag and national anthem.
US Virgin Islands flag and national anthem.
The United States flag and national anthem.
Venezuela's flag and national anthem.