hpcalc.org - HP 28 Archive

HP 28 Documentation Files

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

There are 17 files totaling 11,477 KB in this category.

Battery Drain Table #2   (details) 48 28 ENG   2 KB
Compares battery usage of the HP 48 and HP 28.
By Simone Rapisarda. 1997-08-21

Calculator Command Comparison Sheet 2.00   (details) 49/50 48 28 ENG   279 KB
A command comparison sheet of HP symbolic RPN calculators, containing a description of every command. Covers the HP 28C, 28S, 48S/SX, 48G/G+/GX, and 49G/48gII/49g+. The sheet is color coded based on the model for easy reading. In Excel format but also compatible with OpenOffice and Pocket Excel.
By Veli-Pekka Nousiainen. 2005-05-24

Calculator Comparison 5   (details) 49/50 48 28 ENG   5 KB
Compares the HP 49 with the 48GX, 48G+, 48G, 48SX, 48S, 28S, and 28C.
By Veli-Pekka Nousiainen. 2000-09-21

Customize Your HP-28 Information   (details) 28 ENG   3 KB
Information on the book "Customize Your HP-28."
By Wlodek Mier-Jedrzejowicz. 1998-07-31

Graphics for the HP 28S   (details) 28 ENG   48 KB
Explains all about creating and manipulating graphics on the HP 28S.
By Brian Maguire. 1998-07-31

How to add an RS-232 Port to the HP 28   (details) 28 ENG   14 KB
Explains how to add an RS-232 port to the HP 28.
By Joris Ballet. 1997-09-06

HP 28 Power Consumption Statistics   (details) 28 ENG   12 KB
Information about the power consumption of the HP 28, including information on power consumption versus CPU speed.
By Robert Peraino and Scott Hutchinson. 1998-07-31

HP 28 Setup   (details) 28 ENG   15 KB
One person's setup of his HP 28 memory.
By Eric L. Hernes. 1998-07-31

HP 28S Processor Notes   (details) 28 ENG   14 KB
A four-part document that gives some information about the Saturn processor architecture in the 28S, listing the entire instruction set, including the opcodes and the "AG" mnemonics for them, along with some sample assembly language code written in "AG" mnemonics. Also explains how to enter machine code onto the 28S, and then how to make it into a runnable program, using SYSEVAL commands.
By Alonzo Gariepy. 2017-08-08

HP 28S Proprietary Opcodes   (details) 28 ENG   24 KB
Addendum to the HP 28S Processor Notes, listing the official HP mnemonics.
By Alonzo Gariepy. 1998-07-31

HP 28S vs. HP 41   (details) 28 ENG   5 KB
Comparison of the HP 28S versus the HP 41.
By Mark Simms. 1998-07-31

HP Calc Command Comparison   (details) 48 28 ENG   18 KB
Comparison of the HP 75C, 71B, 28S, 42S, and 48SX commands in MS Works spreadsheet format.
Author unknown. 1998-04-18

HP-28COM Review   (details) 28 ENG   11 KB
Review on the HP-28COM, an RS-232 port for the HP 28S.
By Mogens Jallberg. 1998-07-31

IR Data   (details) 28 ENG   3 KB
Information about the IR LED.
By Chuck. 1998-07-31

IR28   (details) 28 ENG   7 KB
Information about the infrared port on the HP 28.
By Eric Toonen. 1998-07-31

Opening the HP 28   (details) 28 ENG   6,503 KB
Shows how to open the HP 28 with minimal damage. In HTML format with detailed photos.
By Wanderley Navarro. 2017-07-31

Voyage au Centre de la HP 28C/S   (details) 28 FRA   4,514 KB
The best known books about low level programming of the 28C/S. 285 page PDF.
By Paul Courbis and Sébastien Lalande. 2017-09-29

Part of the HP Calculator Archive,
Copyright 1997-2024 Eric Rechlin.