Old HP Forum Archives
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Go to first unread post HP-19C Help needed
Renato, 08-02-2003, 03:06 PM
11 2,646 08-07-2003, 01:19 PM
Last Post: David Smith
   
Go to first unread post HP-19C issue
Giovanni Jimenez, 04-30-2010, 11:03 PM
1 852 05-01-2010, 08:29 PM
Last Post: Michael Meyer
   
Go to first unread post HP-19C key trouble
laget, 03-27-2005, 11:37 AM
2 850 03-31-2005, 10:43 PM
Last Post: laget
   
Go to first unread post HP-19C Paper
Wingman54, 04-08-2010, 04:17 PM
10 2,907 04-19-2010, 07:05 AM
Last Post: Wingman54
    1 712 05-24-2002, 12:55 AM
Last Post: Katie
    3 1,223 09-07-2008, 10:42 PM
Last Post: Michael Meyer
    1 1,013 10-10-2011, 02:13 PM
Last Post: Juergen Keller
   
Go to first unread post HP-19C/HP-97 printer
Tony Thimet, 12-12-2003, 09:13 AM
2 960 12-12-2003, 11:48 AM
Last Post: Stefan Hauschild
   
Go to first unread post HP-1xC serie
Pascal Guillot, 05-29-2005, 02:52 PM
2 822 06-06-2005, 03:27 AM
Last Post: Pascal Guillot
   
Go to first unread post HP-200lx
Geoff Quickfall, 11-10-2009, 08:52 PM
10 2,563 11-13-2009, 12:33 AM
Last Post: Thomas Chrapkiewicz
    2 915 06-07-2001, 12:04 PM
Last Post: Gilberto Campos
   
Go to first unread post HP-200LX and HP-41 IR link
Emmanuel, 09-22-2002, 06:23 AM
3 1,060 09-23-2002, 05:45 AM
Last Post: Mike (Stgt)
   
Go to first unread post HP-200LX died sudenly
jbssm, 03-03-2007, 06:16 PM
3 1,214 03-03-2007, 08:31 PM
Last Post: Bill (Smithville, NJ)
   
Go to first unread post HP-200LX serial cable
David Ramsey, 01-16-2003, 01:26 PM
6 1,671 01-17-2003, 08:23 PM
Last Post: David Ramsey
   
Go to first unread post HP-20B dev: LCD
Scott Newell, 07-22-2008, 12:48 AM
0 705 07-22-2008, 12:48 AM
Last Post: Scott Newell
   
Go to first unread post HP-20B key matrix
Scott Newell, 07-20-2008, 10:01 PM
2 970 07-21-2008, 10:04 AM
Last Post: Scott Newell
   
Go to first unread post HP-20B pics!
Scott Newell, 07-17-2008, 07:54 PM
21 4,174 07-18-2008, 12:42 AM
Last Post: Seth Morabito
   
Go to first unread post HP-20B test
Scott Newell, 07-18-2008, 09:05 PM
2 937 07-19-2008, 11:30 AM
Last Post: Scott Newell
   
Go to first unread post hp-20s
Peter Cerutti, 04-30-2001, 09:02 AM
2 780 04-30-2001, 05:40 PM
Last Post: Y. Samuel Arai
   
Go to first unread post HP-20S
Marc B., 03-21-2005, 12:29 PM
49 9,991 03-22-2005, 01:46 AM
Last Post: VPN
    2 1,114 12-21-2007, 01:58 AM
Last Post: Antonio Maschio (Italy)
   
Go to first unread post HP-20S CIRCONIX
George, 01-18-2003, 10:26 AM
1 784 01-18-2003, 12:08 PM
Last Post: Glen Kilpatrick
   
Go to first unread post HP-20S Manual?
Tom McCaffrey, 10-26-2009, 10:02 PM
1 936 10-26-2009, 10:25 PM
Last Post: Katie Wasserman
    2 879 07-09-2001, 03:59 AM
Last Post: cam
   
Go to first unread post HP-21 & HP-25 Battery Pack
Jordi Tarda, 07-12-2006, 03:31 PM
6 1,472 07-19-2006, 11:40 PM
Last Post: Vassilis Prevelakis
    1 763 02-05-2001, 12:41 PM
Last Post: Andrés C. Rodríguez (Argentina)
    0 600 02-12-2005, 04:01 AM
Last Post: Eric Smith
    9 2,031 02-11-2001, 12:56 AM
Last Post: Jonathan
   
Go to first unread post HP-21 battery drain
Michel Beaulieu, 01-25-2005, 04:50 PM
7 1,775 01-26-2005, 08:21 AM
Last Post: Tony Duell
   
Go to first unread post HP-21 battery leakage
Brian Keller, 05-26-2000, 09:37 AM
13 2,866 06-02-2000, 02:40 PM
Last Post: Andrés C. Rodríguez
   
Go to first unread post HP-21 battery terminals
Natalie Wilkie, 03-26-2003, 04:13 PM
3 1,076 03-27-2003, 06:09 PM
Last Post: David Smith
   
Go to first unread post HP-21 CHARGER
jia, 01-11-2003, 11:33 AM
6 1,474 01-12-2003, 06:42 PM
Last Post: Tony Duell (UK)
    4 1,249 05-14-2003, 12:22 AM
Last Post: Vieira, Luiz C. (Brazil)
   
Go to first unread post HP-21 Decimal Places
Reed Jones, 10-08-2001, 01:54 AM
3 1,097 10-08-2001, 03:59 PM
Last Post: David Smith
   
Go to first unread post HP-21 displays all zeroes
Barry Smith, 01-23-2012, 06:29 PM
5 1,911 01-27-2012, 01:22 PM
Last Post: Steve Simpkin
   
Go to first unread post hp-21 key malfunction
Marc Pepin, 04-12-2005, 04:03 PM
1 722 04-12-2005, 04:28 PM
Last Post: Phil
   
Go to first unread post HP-21 keybord malfunction
Mike (Stgt), 12-05-2005, 07:42 AM
3 1,087 12-07-2005, 08:40 AM
Last Post: Etienne Victoria
   
Go to first unread post HP-21 museum pic on ebay?
Gene, 08-09-2002, 10:15 PM
0 629 08-09-2002, 10:15 PM
Last Post: Gene
    6 1,522 12-28-2002, 12:49 PM
Last Post: David Smith
   
Go to first unread post HP-21 Rides again
Namir, 05-24-2010, 11:46 AM
5 1,668 05-26-2010, 05:55 AM
Last Post: Thomas Okken
    14 3,708 09-18-2010, 04:56 PM
Last Post: Peter Geiser
    7 2,038 09-26-2009, 02:08 PM
Last Post: Steve Lidie
   
Go to first unread post HP-21 trivia
Eric Smith, 02-21-2005, 07:22 PM
26 5,614 03-21-2005, 11:31 AM
Last Post: Mike (Stgt)
   
Go to first unread post HP-21S Impressions
Juan J, 07-08-2006, 01:16 PM
12 2,812 07-08-2006, 07:55 PM
Last Post: Juan J
    0 573 07-05-2001, 01:56 PM
Last Post: Victor
    3 1,142 03-17-2004, 03:53 AM
Last Post: Walter B
   
Go to first unread post HP-22
brummybird, 02-10-2011, 02:40 PM
9 2,552 02-10-2011, 10:07 PM
Last Post: db (martinez, ca.)
   
Go to first unread post hp-22
Alex, 06-22-2000, 11:17 PM
1 779 06-23-2000, 04:11 AM
Last Post: Viktor Toth
   
Go to first unread post HP-22 Repair
D. Banks, 03-28-2001, 09:25 AM
2 816 03-28-2001, 09:25 PM
Last Post: D. Banks
   
Go to first unread post HP-22s
Benny, 08-30-2002, 11:34 PM
1 809 08-31-2002, 01:33 PM
Last Post: Randy Sloyer(US)
    1 736 03-24-2003, 06:15 PM
Last Post: Paul Brogger
   
Go to first unread post HP-25
Michel Beaulieu, 03-19-2003, 12:23 PM
5 1,411 03-20-2003, 11:32 AM
Last Post: David Smith
   
Go to first unread post HP-25
Wayne Selway, 11-22-2013, 12:25 PM
1 1,222 11-22-2013, 12:58 PM
Last Post: Michael de Estrada
   
Go to first unread post HP-25
aj04062, 02-10-2011, 09:12 PM
1 841 02-10-2011, 10:52 PM
Last Post: Michael de Estrada
   
Go to first unread post HP-25
robertoataulfo, 07-25-2011, 01:04 PM
4 1,562 07-25-2011, 02:12 PM
Last Post: robertoataulfo
   
Go to first unread post HP-25
aj04062, 03-24-2012, 10:55 AM
13 3,631 03-30-2012, 03:23 AM
Last Post: Russell Dobson
   
Go to first unread post HP-25 / HP 41C
marsh, 03-27-2007, 01:21 PM
5 1,541 03-27-2007, 01:53 PM
Last Post: Dia C. Tran
   
Go to first unread post HP-25 battery
Seth, 11-13-2001, 11:06 PM
4 1,294 11-15-2001, 10:01 PM
Last Post: Andrés C. Rodríguez (Argentina)
   
Go to first unread post HP-25 Battery Pack
Alan, 11-01-1999, 10:59 PM
1 801 11-02-1999, 02:05 AM
Last Post: Viktor Toth
   
Go to first unread post HP-25 Battery Pack
Andreas Grund, 10-02-2009, 07:04 AM
17 4,452 10-20-2009, 07:34 AM
Last Post: Xavier A. (Brazil)
   
Go to first unread post HP-25 battery pack
Steven Green, 11-24-2009, 05:27 PM
11 2,736 11-29-2009, 05:04 AM
Last Post: Andreas Grund
   
Go to first unread post HP-25 Bugs
Michael Holley, 04-30-2002, 11:14 AM
12 2,903 04-30-2002, 09:42 PM
Last Post: Michael Holley
   
Go to first unread post HP-25 Calculators
Jim, 02-04-2007, 10:49 AM
12 2,697 02-05-2007, 05:59 PM
Last Post: Jim
   
Go to first unread post HP-25 Capacitor Question
Larry, 09-22-2001, 11:22 PM
2 972 09-23-2001, 01:54 PM
Last Post: Tony Duell (UK)
   
Go to first unread post HP-25 display weirdness
Jonas Otter, 06-23-2002, 07:37 AM
0 643 06-23-2002, 07:37 AM
Last Post: Jonas Otter
    2 1,073 01-23-2011, 06:30 AM
Last Post: Harald
   
Go to first unread post HP-25 dots and dots...
Cedric F, 12-24-2003, 03:03 PM
2 953 12-29-2003, 01:25 PM
Last Post: David Smith
   
Go to first unread post HP-25 erratic behaviour
Alberto Fenini, 11-30-2009, 06:38 AM
23 5,040 12-03-2009, 10:06 AM
Last Post: Bart (UK)
    10 2,436 01-27-2009, 07:48 PM
Last Post: Randy
    0 625 03-13-2008, 01:02 PM
Last Post: Rob W.
    3 1,065 09-02-2003, 02:57 PM
Last Post: David Smith
   
Go to first unread post HP-25 keyboard
Brad Barton, 02-15-2013, 04:44 PM
5 1,905 02-16-2013, 09:59 PM
Last Post: Brad Barton
    3 1,276 12-03-2007, 03:47 PM
Last Post: glauber
    12 3,543 04-10-2013, 11:33 PM
Last Post: Steve Leibson
   
Go to first unread post HP-25 manual revisions
David Smith, 07-20-2003, 03:22 PM
1 975 07-20-2003, 04:24 PM
Last Post: Bill
   
Go to first unread post Hp-25 needs service
Thomas Radtke, 01-14-2007, 06:03 AM
3 1,189 01-16-2007, 09:06 AM
Last Post: Thomas Radtke
   
Go to first unread post HP-25 Power-On Issue
Wes Fujii, 06-04-2002, 12:00 PM
8 1,906 06-08-2002, 05:28 PM
Last Post: David Smith
   
Go to first unread post hp-25 pressing 1 displays 3?
Rodney, 02-25-2003, 11:37 AM
0 544 02-25-2003, 11:37 AM
Last Post: Rodney
   
Go to first unread post HP-25 problem
Robert Burnham, 02-22-2003, 05:06 PM
7 1,793 02-23-2003, 08:49 PM
Last Post: David Smith
   
Go to first unread post HP-25 Prog Cose Puzzle
Gordon Dyer, 10-12-2003, 10:46 AM
2 861 10-13-2003, 08:25 AM
Last Post: Gordon Dyer
   
Go to first unread post HP-25 program line
Michel Beaulieu, 03-20-2003, 10:14 PM
7 1,727 03-21-2003, 05:26 PM
Last Post: David Smith
   
Go to first unread post HP-25 repair
Jon, 04-29-2003, 11:02 AM
5 1,417 04-30-2003, 03:31 PM
Last Post: David Smith
   
Go to first unread post HP-25 Repair
Bernhard Emese, 05-23-2003, 02:01 PM
0 676 05-23-2003, 02:01 PM
Last Post: Bernhard Emese
   
Go to first unread post HP-25 Repair Tiips Needed.
Tony Copley, 04-18-1999, 12:39 AM
4 1,347 04-18-1999, 04:59 PM
Last Post: DaveC
   
Go to first unread post HP-25 Repair?
Palmer O. Hanson, Jr., 04-19-2008, 09:17 PM
5 1,457 04-21-2008, 06:19 AM
Last Post: Alejandro Paz (Germany)
   
Go to first unread post HP-25 turns itself off
Des McPherson, 07-14-2009, 05:04 PM
1 784 07-14-2009, 06:28 PM
Last Post: Geoff Quickfall
   
Go to first unread post HP-25 update and thank you
J Grim, 05-06-2010, 08:01 PM
2 1,294 05-07-2010, 12:04 AM
Last Post: Martin Pinckney
   
Go to first unread post HP-25 weird behavior
Dan F, 02-10-2003, 05:38 PM
3 1,055 02-11-2003, 05:58 PM
Last Post: David Smith
   
Go to first unread post HP-25/25C Potential
Matt Agajanian, 07-08-2013, 10:07 PM
14 4,136 07-17-2013, 02:57 AM
Last Post: Matt Agajanian
    3 1,110 06-29-2002, 04:36 PM
Last Post: Juergen Rodenkirchen
    4 1,190 06-25-2002, 02:30 PM
Last Post: Juergen Rodenkirchen
   
Go to first unread post HP-25C ACT Chip?
Mark Henderson, 11-08-2010, 05:33 PM
0 674 11-08-2010, 05:33 PM
Last Post: Mark Henderson
   
Go to first unread post HP-25C Battery Pac
Trent Moseley, 04-14-2003, 06:26 PM
1 722 04-14-2003, 06:38 PM
Last Post: David Smith
   
Go to first unread post HP-25C Battery Pack
Trent Moseley, 06-08-2007, 09:21 PM
1 790 06-09-2007, 05:52 PM
Last Post: Walter B
    1 758 06-19-2005, 02:45 PM
Last Post: Andrés C. Rodríguez (Argentina)
    0 612 01-24-2007, 06:08 AM
Last Post: John Garza
    2 1,101 06-10-2010, 09:20 PM
Last Post: Vieira, Luiz C. (Brazil)
   
Go to first unread post HP-25C repair
MikeG, 06-04-2007, 08:28 PM
3 1,109 06-05-2007, 02:14 AM
Last Post: Eric Smith
   
Go to first unread post HP-25C Repairing
aj04062, 10-28-2011, 10:09 PM
11 3,145 10-31-2011, 01:11 PM
Last Post: Randy
    14 3,364 04-26-2009, 06:21 PM
Last Post: Alberto Fenini


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