hpcalc.org - HP 28 Archive

HP 28 Utilities

The first size listed is the downloaded file size and the second size listed is the size on the calculator.


There are 28 files totaling 165KB in this category.

ARC   (details) 28   EN   12KB/1KB
An HP 28S file compression/archival system. Easily compresses objects by 50%.
By Robert Peraino. 1998/07/31

Beep   (details) 28   EN   1KB/1KB
Simple program to turn the sound on and off.
By Pandy Holmberg. 1998/07/31

Calendar   (details) 28   EN   2KB/1KB
Scrollable calendar/clock program.
By Strauss Erez. 1998/07/31

Checksum   (details) 28   EN   2KB/1KB
Another checksum calculator.
By Friedrich Schroeder. 1998/07/31

CHK   (details) 28   EN   1KB/1KB
Checksum calculator.
By Robert Peraino. 1998/07/31

Clock   (details) 28   EN   3KB/1KB
Day/time clock.
By Eric Stuyvesant. 1998/07/31

Clock   (details) 28   EN   4KB/2KB
Clock and calendar program.
By James Gentles. 1998/07/31

Clock/Calendar   (details) 28   EN   5KB/4KB
Clock and calendar program.
By Stephen A. Luse. 1998/07/31

Composer   (details) 28   EN   2KB/2KB
Allows you to compose music.
By Dave Still. 1998/07/31

Crypt   (details) 28   EN   2KB/1KB
Encrypts and decrypts strings.
By Johan Olsson. 1998/07/31

DHC (Double Height Characters)   (details) 28   EN   3KB/1KB
This program modifies the 28C display driver settings that the bottom two lines are shown in double height.
By Christoph Gießelink (H). 2006/08/28

Directory Alphabetizer   (details) 28   EN   1KB/1KB
Orders any directory in ascending alphabetical order.
By John Gorton. 1998/07/31

EVAL TIMER 2004-08-08   (details) 49/50   48   28   EN   5KB/1KB
Timed evaluation of object, returning results in both ticks and seconds. Two programs (one for the 48 and 49 series, and the other for the 28 series) are provided as User RPL source code within the text file. These work correctly with any wordsize, and compensate for the time used by the program. Minor modification to match the individual calculator is required.
By James M. Prange. 2004/08/19

Fast   (details) 28   EN   2KB/1KB
Speeds up the HP 28.
By Fredrik Norrman. 1998/07/31

Fast 2   (details) 28   EN   1KB/1KB
Creates FAST with some SYSEVALs.
Author unknown. 1998/07/31

Flag Pack   (details) 28   EN   2KB/1KB
Allows one to name flags.
By Christian Wettergren. 1998/07/31

Framstags' Utilities   (details) 28   EN   3KB/1KB
Several memory management programs.
Author unknown. 1998/07/31

Fuel Gauge   (details) 28   EN   3KB/1KB
"Fuel gauge" showing remaining battery power with a 1 or 0.
By Robert Peraino. 1998/07/31

HP Toolkit   (details) 28   EN   15KB/1+KB
Contents of one person's HP 28, with many useful utilities.
By James Gentles. 1998/07/31

Input   (details) 28   EN   2KB/1KB
Program for interactive input.
By Ulli Horlacher. 1998/07/31

List 2.1   (details) 28   EN   8KB/5KB
General list handler.
By B. Fahller. 1998/07/31

Off with ID   (details) 28   EN   1KB/1KB
Turns the HP 28 off and shows an identification screen upon powerup.
Author unknown. 1998/07/31

Pack/Unpack   (details) 28   EN   2KB/1KB
Makes it easy to move files around the HP 28 directory structure.
By Craig Lien. 1998/07/31

Recalling Directories   (details) 28   EN   1KB/1KB
Recalls a directory object onto the stack.
By Alonzo Gariepy. 1998/07/31

RJ IINPUT 1.0   (details) 49/50   48   28   EN   FR   74KB/1KB
ScreenshotVery interesting routine in RPL to key integer numbers without interrupting your program. I saw lot of requests in the newsgroup concerning such a function. Included is a small game to test RJ IINPUT (as Integer Input).
By Rémi Janelle. 2004/05/09

Service Call   (details) 28   EN   1KB/1KB
Makes commonly needed functions handy.
By Jan Christiaan van Winkel. 1998/07/31

Speed   (details) 28   EN   1KB/1KB
Allows you to select the 28's speed on a scale of 1 to 15, with 7 being the default.
Author unknown. 1998/07/31

Using the HP28S as a Remote Control   (details) 28   EN   6KB/1+KB
Routines to use the 28S as a remote control.
By Michiel Niemeijer and Eric Toonen. 1998/07/31

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Copyright 1997-2011 Eric Rechlin.