Jake-S@cup.portal.com (Jake G Schwartz) (02/05/91)
Calculator Nostalgia - part 2 The month of January has been a special one for HP calculators, being that several had introduction dates in this month. To name a few, the HP35 came in 1972, the HP65 in 1974, the HP71B in 1984 and the HP28S in 1988. Here's some more user group material from the month of January: ---------------------------------------------------------------------- 15 years ago: ------------- From the HP65 Notes V3N1 (Jan 1976) - HP Status (delivery times) HP65. . . . . . . 2+ weeks HP55. . . . . . . 3+ weeks HP25. . . . . . . 2 weeks Contributors' library programs to date ..... 4150 HP25/55 Notes by Richard Vanderburgh featured an article called "Converting HP-65 Programs to 25/55 Use". Featured programs were: 35-window histogram for HP-65 by Dick Hoppe 10-digit by 10-digit multiply for HP-25 by Philip Wasson Double Precision Product of integers for HP-25 by James J. Davidson 4 by 4 determinant for the TI SR-52 by Richard Vanderburgh 10 years ago: ------------- From the PPC Calculator Journal V8N1 (Jan/Feb 1981): Several articles featuring development progress of the PPC ROM (HP41C) "Installing Modules Inside the HP41C" by John C. Massman "More HP34C Data Base" by Richard Collett "Program Mode Byte Jumpers (41C)" by Clifford Stern "HP65 Standard Statictics" by Richard Wood "HP41C Systems of First-Order Differential Equations" by Valentin Albillo "HP29C Differential Equations" by Stephen J. Gold Editorial: "The PPC (Personal Programmable Calculator) - How Soon Extinct?" by Richard Nelson 5 Years ago: ------------ From the PPC Journal V13N1 (Jan. 1986): "A Philosophical Discourse on the Evolution of the Hand Held Calculator" by David Johanson "HP71 Controlled Slide Projector Dissolve Unit, Part 2" by Gary Friedman "HP41 Mcode Review" by Chuck Bouldin "File Utilities for HP-75" by Eric Guyon "Mandelbrot Set (HP-75)" by Charles Watson From the CHHU Chronicle V3N1 (Jan/Feb 1986): "Printing HP-41 Barcode with the HP-75" by Michael Markov "HP-IL Column #3- Diversions and Experiments on the Loop" by Larry Kramer "CCD ROM Column #5 - Writing all of HP-41 RAM onto cassette" by by Gerhard Kruse "HP-71 Continuous Mass Memory Printout of Files" by James R. Gorson "Titan File Column #8 - Buckaroo Bonzai The Mouse Seeks Cheeze in 8 Dimen- sions, Using Using, HP-71 Stereo Music, Tuneup" by Joseph K. Horn From Datafile V5N1 (Jan/Feb 1986): "HP-75C Comparison with other Micros" by P. Kokol "Extending the 41 Stat Pac" by T. Stancliffe "Reading ASCII files from Tape" (HP41) "HP41 Column: The HP41 Advantage Module" (Reviewed by Wlodek Mier- Jedrzejowicz) "File Name Sort" (HP71) by Mark Cracknell ----------------------------------------------------------------- Jake Schwartz