35 results for tags
Packard x
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Microsoft Word - HP-IR Receiver with Arduino.doc - HP-IR Receiver with Arduino.pdf
A Hewlett Packard Infrared Signal DecoderThu Feb 15 11:07:58 2018 - permalink -
Martin Hepperle
June 2015
Several Hewlett Packard pocket calculators are able to send printer output via Infra-Red (IR) signals to a small portable printer. They use an HP-specific transmission protocol which is also called “Red Eye”. This protocol is different from the better known IrDA protocol. This document gives a brief overview of the format and describes hard- and software to build a decoder system for this protocol.
This system allows receiving the “Red Eye” signals with a computer via a serial or an USB interface.- http://www.mh-aerotools.de/hp/red-eye/HP-IR%20Receiver%20with%20Arduino.pdf
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DM42
Example programs, (off) images and photos of the internals of the SwissMicros DM42 calculator.Mon Feb 12 17:17:28 2018 - permalink -- http://www.finetune.co.jp/~lyuka/interests/calc/dm42/
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Writing an Almanac for WP-34S - Use Bowditch?
Links and recommendations for books about astronomical algorithms.Sun Nov 20 18:12:11 2016 - permalink -- http://www.hpmuseum.org/forum/thread-6750.html
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RPN calculators
Interesting page about HP calculators, including tips to check the battery on the hp15c LE, example programs and more.Fri Nov 15 15:51:14 2013 - permalink -- http://tuxgraphics.org/~guido/hp_calc/
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SwissMicros.com
The world's smallest programmable RPN calculators ever. The complete family DM-11, DM-12, DM-15 and DM-16.Wed Nov 28 09:54:36 2012 - permalink -- http://www.swissmicros.com/
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Some badly conditioned matrices to test the accuracy of determinant calculations.
Fri Oct 7 12:42:32 2011 - permalink -- http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv015.cgi?read=72635
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HP-15C web-simulator
Web-based simulator of the hp15c calculator. Enhanced version with stack display. Note that contrary to emulators such as nonpareil, this simulator does not produce the same results as the real hp15c.Sun Sep 18 01:45:46 2011 - permalink -- http://hp15c.com/web/hp15c.html
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ND1
RPL-based calculator for iPhone, an Android version has been announced.Mon Jul 25 15:27:24 2011 - permalink -- http://naivedesign.com/ND1/ND1.html
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HP28 with transparent case
Might be useful when disassembling an HP28.Thu Jul 21 15:55:58 2011 - permalink -- http://www.flickr.com/photos/60529780@N02/5537679547/in/set-72157626354812528
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emu71 Page
Emulator for the HP71B, running under DOS.Thu Jul 21 14:00:15 2011 - permalink -- http://www.jeffcalc.hp41.eu/emu71/index.html
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HP 28S: shucking the clamshell, further. Book?
Some pictures and text about opening an HP 28S.Tue Jul 19 14:54:45 2011 - permalink -- http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv020.cgi?read=185173#185173
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RPN-CALC DM-15CC
A credit-card sized clone of the legendary hp-15c calculator developed in Switzerland. First units have been shipped early February 2012. A version to emulate the hp-16c is planned. Also known as http://www.swissmicros.com/.Tue Jul 12 20:08:44 2011 - permalink -- http://www.rpn-calc.ch/
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HP Journal - online issues
The famous HP journal is available on-line at last!Fri Mar 28 11:39:33 2008 - permalink -- http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/hpjindex.html
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Bring Back the HP 15C
A petition to bring back the HP15C scientific calculator. Note that HP produced the limited edition of the HP 15C (2011?)Mon Jun 11 19:00:49 2007 - permalink -- http://hp15c.org/about.php
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HP Journal - Online Issues
Some issues of the famous HP Journal are available on-line.Mon Nov 6 13:35:54 2006 - permalink -- http://www.hpl.hp.com/hpjournal/past.htm