Old HP Forum Archives
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Thread [desc] / Author | Replies | Views | Last Post | ||
HP-19C Help needed
08-02-2003, 03:06 PM
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11 | 2,622 |
08-07-2003, 01:19 PM Last Post: David Smith |
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HP-19C issue
04-30-2010, 11:03 PM
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1 | 842 |
05-01-2010, 08:29 PM Last Post: Michael Meyer |
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HP-19C key trouble
03-27-2005, 11:37 AM
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2 | 842 |
03-31-2005, 10:43 PM Last Post: laget |
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HP-19C Paper
04-08-2010, 04:17 PM
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10 | 2,886 |
04-19-2010, 07:05 AM Last Post: Wingman54 |
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HP-19C printer overhaul discoveries
05-23-2002, 12:35 AM
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1 | 699 |
05-24-2002, 12:55 AM Last Post: Katie |
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HP-19C Printer Repair Atempt
09-06-2008, 01:59 PM
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3 | 1,202 |
09-07-2008, 10:42 PM Last Post: Michael Meyer |
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HP-19C with a strange S/N
10-10-2011, 11:17 AM
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1 | 1,004 |
10-10-2011, 02:13 PM Last Post: Juergen Keller |
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HP-19C/HP-97 printer
12-12-2003, 09:13 AM
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2 | 949 |
12-12-2003, 11:48 AM Last Post: Stefan Hauschild |
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HP-1xC serie
05-29-2005, 02:52 PM
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2 | 816 |
06-06-2005, 03:27 AM Last Post: Pascal Guillot |
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HP-200lx
11-10-2009, 08:52 PM
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10 | 2,513 |
11-13-2009, 12:33 AM Last Post: Thomas Chrapkiewicz |
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HP-200LX - Help, does not turn on
06-06-2001, 10:07 AM
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2 | 901 |
06-07-2001, 12:04 PM Last Post: Gilberto Campos |
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HP-200LX and HP-41 IR link
09-22-2002, 06:23 AM
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3 | 1,040 |
09-23-2002, 05:45 AM Last Post: Mike (Stgt) |
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HP-200LX died sudenly
03-03-2007, 06:16 PM
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3 | 1,192 |
03-03-2007, 08:31 PM Last Post: Bill (Smithville, NJ) |
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HP-200LX serial cable
01-16-2003, 01:26 PM
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6 | 1,651 |
01-17-2003, 08:23 PM Last Post: David Ramsey |
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HP-20B dev: LCD
07-22-2008, 12:48 AM
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0 | 694 |
07-22-2008, 12:48 AM Last Post: Scott Newell |
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HP-20B key matrix
07-20-2008, 10:01 PM
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2 | 958 |
07-21-2008, 10:04 AM Last Post: Scott Newell |
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HP-20B pics!
07-17-2008, 07:54 PM
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21 | 4,117 |
07-18-2008, 12:42 AM Last Post: Seth Morabito |
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HP-20B test
07-18-2008, 09:05 PM
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2 | 925 |
07-19-2008, 11:30 AM Last Post: Scott Newell |
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hp-20s
04-30-2001, 09:02 AM
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2 | 765 |
04-30-2001, 05:40 PM Last Post: Y. Samuel Arai |
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HP-20S
03-21-2005, 12:29 PM
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49 | 9,893 |
03-22-2005, 01:46 AM Last Post: VPN |
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HP-20S and MEM command
12-20-2007, 12:06 PM
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2 | 1,102 |
12-21-2007, 01:58 AM Last Post: Antonio Maschio (Italy) |
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HP-20S CIRCONIX
01-18-2003, 10:26 AM
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1 | 771 |
01-18-2003, 12:08 PM Last Post: Glen Kilpatrick |
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HP-20S Manual?
10-26-2009, 10:02 PM
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1 | 922 |
10-26-2009, 10:25 PM Last Post: Katie Wasserman |
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HP-20S:How do I store memory?(i have no manual)
07-06-2001, 05:48 AM
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2 | 872 |
07-09-2001, 03:59 AM Last Post: cam |
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HP-21 & HP-25 Battery Pack
07-12-2006, 03:31 PM
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6 | 1,452 |
07-19-2006, 11:40 PM Last Post: Vassilis Prevelakis |
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HP-21 and Alkaline Cells
02-05-2001, 11:23 AM
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1 | 757 |
02-05-2001, 12:41 PM Last Post: Andrés C. Rodríguez (Argentina) |
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HP-21 and HP-25 now working in Nonpareil simulator
02-12-2005, 04:01 AM
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0 | 592 |
02-12-2005, 04:01 AM Last Post: Eric Smith |
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HP-21 Battery Charging Problems
02-07-2001, 12:07 AM
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9 | 1,991 |
02-11-2001, 12:56 AM Last Post: Jonathan |
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HP-21 battery drain
01-25-2005, 04:50 PM
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7 | 1,764 |
01-26-2005, 08:21 AM Last Post: Tony Duell |
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HP-21 battery leakage
05-26-2000, 09:37 AM
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13 | 2,806 |
06-02-2000, 02:40 PM Last Post: Andrés C. Rodríguez |
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HP-21 battery terminals
03-26-2003, 04:13 PM
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3 | 1,063 |
03-27-2003, 06:09 PM Last Post: David Smith |
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HP-21 CHARGER
01-11-2003, 11:33 AM
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6 | 1,457 |
01-12-2003, 06:42 PM Last Post: Tony Duell (UK) |
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HP-21 Circuit Diagram Schematic
05-12-2003, 06:50 PM
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4 | 1,218 |
05-14-2003, 12:22 AM Last Post: Vieira, Luiz C. (Brazil) |
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HP-21 Decimal Places
10-08-2001, 01:54 AM
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3 | 1,088 |
10-08-2001, 03:59 PM Last Post: David Smith |
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HP-21 displays all zeroes
01-23-2012, 06:29 PM
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5 | 1,890 |
01-27-2012, 01:22 PM Last Post: Steve Simpkin |
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hp-21 key malfunction
04-12-2005, 04:03 PM
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1 | 708 |
04-12-2005, 04:28 PM Last Post: Phil |
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HP-21 keybord malfunction
12-05-2005, 07:42 AM
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3 | 1,065 |
12-07-2005, 08:40 AM Last Post: Etienne Victoria |
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HP-21 museum pic on ebay?
08-09-2002, 10:15 PM
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0 | 622 |
08-09-2002, 10:15 PM Last Post: Gene |
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Hp-21 problems after battery leak.
12-24-2002, 08:42 PM
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6 | 1,505 |
12-28-2002, 12:49 PM Last Post: David Smith |
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HP-21 Rides again
05-24-2010, 11:46 AM
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5 | 1,656 |
05-26-2010, 05:55 AM Last Post: Thomas Okken |
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HP-21 sells for nearly $400 on TOS!
09-18-2010, 10:34 AM
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14 | 3,651 |
09-18-2010, 04:56 PM Last Post: Peter Geiser |
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HP-21 simulator for iPhone/iPod
09-16-2009, 02:19 AM
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7 | 2,017 |
09-26-2009, 02:08 PM Last Post: Steve Lidie |
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HP-21 trivia
02-21-2005, 07:22 PM
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26 | 5,521 |
03-21-2005, 11:31 AM Last Post: Mike (Stgt) |
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HP-21S Impressions
07-08-2006, 01:16 PM
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12 | 2,757 |
07-08-2006, 07:55 PM Last Post: Juan J |
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HP-21S Library Programs Instructions
07-05-2001, 01:56 PM
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0 | 565 |
07-05-2001, 01:56 PM Last Post: Victor |
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HP-21S Quick Reference Card scanned
03-14-2004, 10:07 AM
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3 | 1,133 |
03-17-2004, 03:53 AM Last Post: Walter B |
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HP-22
02-10-2011, 02:40 PM
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9 | 2,531 |
02-10-2011, 10:07 PM Last Post: db (martinez, ca.) |
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hp-22
06-22-2000, 11:17 PM
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1 | 768 |
06-23-2000, 04:11 AM Last Post: Viktor Toth |
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HP-22 Repair
03-28-2001, 09:25 AM
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2 | 809 |
03-28-2001, 09:25 PM Last Post: D. Banks |
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HP-22s
08-30-2002, 11:34 PM
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1 | 808 |
08-31-2002, 01:33 PM Last Post: Randy Sloyer(US) |
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hp-22S open cant put back together
03-24-2003, 05:49 PM
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1 | 732 |
03-24-2003, 06:15 PM Last Post: Paul Brogger |
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HP-25
03-19-2003, 12:23 PM
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5 | 1,387 |
03-20-2003, 11:32 AM Last Post: David Smith |
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HP-25
11-22-2013, 12:25 PM
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1 | 1,209 |
11-22-2013, 12:58 PM Last Post: Michael de Estrada |
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HP-25
02-10-2011, 09:12 PM
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1 | 834 |
02-10-2011, 10:52 PM Last Post: Michael de Estrada |
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HP-25
07-25-2011, 01:04 PM
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4 | 1,535 |
07-25-2011, 02:12 PM Last Post: robertoataulfo |
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HP-25
03-24-2012, 10:55 AM
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13 | 3,594 |
03-30-2012, 03:23 AM Last Post: Russell Dobson |
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HP-25 / HP 41C
03-27-2007, 01:21 PM
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5 | 1,505 |
03-27-2007, 01:53 PM Last Post: Dia C. Tran |
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HP-25 battery
11-13-2001, 11:06 PM
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4 | 1,282 |
11-15-2001, 10:01 PM Last Post: Andrés C. Rodríguez (Argentina) |
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HP-25 Battery Pack
11-01-1999, 10:59 PM
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1 | 785 |
11-02-1999, 02:05 AM Last Post: Viktor Toth |
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HP-25 Battery Pack
10-02-2009, 07:04 AM
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17 | 4,335 |
10-20-2009, 07:34 AM Last Post: Xavier A. (Brazil) |
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HP-25 battery pack
11-24-2009, 05:27 PM
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11 | 2,709 |
11-29-2009, 05:04 AM Last Post: Andreas Grund |
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HP-25 Bugs
04-30-2002, 11:14 AM
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12 | 2,896 |
04-30-2002, 09:42 PM Last Post: Michael Holley |
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HP-25 Calculators
02-04-2007, 10:49 AM
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12 | 2,632 |
02-05-2007, 05:59 PM Last Post: Jim |
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HP-25 Capacitor Question
09-22-2001, 11:22 PM
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2 | 957 |
09-23-2001, 01:54 PM Last Post: Tony Duell (UK) |
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HP-25 display weirdness
06-23-2002, 07:37 AM
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0 | 636 |
06-23-2002, 07:37 AM Last Post: Jonas Otter |
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HP-25 displays "Error" when trying to input numbers
01-22-2011, 05:44 PM
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2 | 1,066 |
01-23-2011, 06:30 AM Last Post: Harald |
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HP-25 dots and dots...
12-24-2003, 03:03 PM
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2 | 938 |
12-29-2003, 01:25 PM Last Post: David Smith |
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HP-25 erratic behaviour
11-30-2009, 06:38 AM
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23 | 4,948 |
12-03-2009, 10:06 AM Last Post: Bart (UK) |
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HP-25 fails to store programming steps
01-26-2009, 04:40 PM
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10 | 2,424 |
01-27-2009, 07:48 PM Last Post: Randy |
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HP-25 first production dates & quantities
03-13-2008, 01:02 PM
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0 | 619 |
03-13-2008, 01:02 PM Last Post: Rob W. |
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HP-25 internal Power Circuit Charger
09-01-2003, 01:17 PM
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3 | 1,053 |
09-02-2003, 02:57 PM Last Post: David Smith |
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HP-25 keyboard
02-15-2013, 04:44 PM
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5 | 1,858 |
02-16-2013, 09:59 PM Last Post: Brad Barton |
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HP-25 keyboard problem (4 enters 6)
12-03-2007, 11:23 AM
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3 | 1,257 |
12-03-2007, 03:47 PM Last Post: glauber |
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HP-25 left on for a long, long, while
04-08-2013, 11:51 PM
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12 | 3,524 |
04-10-2013, 11:33 PM Last Post: Steve Leibson |
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HP-25 manual revisions
07-20-2003, 03:22 PM
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1 | 961 |
07-20-2003, 04:24 PM Last Post: Bill |
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Hp-25 needs service
01-14-2007, 06:03 AM
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3 | 1,174 |
01-16-2007, 09:06 AM Last Post: Thomas Radtke |
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HP-25 Power-On Issue
06-04-2002, 12:00 PM
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8 | 1,870 |
06-08-2002, 05:28 PM Last Post: David Smith |
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hp-25 pressing 1 displays 3?
02-25-2003, 11:37 AM
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0 | 537 |
02-25-2003, 11:37 AM Last Post: Rodney |
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HP-25 problem
02-22-2003, 05:06 PM
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7 | 1,780 |
02-23-2003, 08:49 PM Last Post: David Smith |
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HP-25 Prog Cose Puzzle
10-12-2003, 10:46 AM
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2 | 855 |
10-13-2003, 08:25 AM Last Post: Gordon Dyer |
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HP-25 program line
03-20-2003, 10:14 PM
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7 | 1,710 |
03-21-2003, 05:26 PM Last Post: David Smith |
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HP-25 repair
04-29-2003, 11:02 AM
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5 | 1,411 |
04-30-2003, 03:31 PM Last Post: David Smith |
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HP-25 Repair
05-23-2003, 02:01 PM
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0 | 653 |
05-23-2003, 02:01 PM Last Post: Bernhard Emese |
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HP-25 Repair Tiips Needed.
04-18-1999, 12:39 AM
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4 | 1,327 |
04-18-1999, 04:59 PM Last Post: DaveC |
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HP-25 Repair?
04-19-2008, 09:17 PM
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5 | 1,439 |
04-21-2008, 06:19 AM Last Post: Alejandro Paz (Germany) |
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HP-25 turns itself off
07-14-2009, 05:04 PM
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1 | 777 |
07-14-2009, 06:28 PM Last Post: Geoff Quickfall |
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HP-25 update and thank you
05-06-2010, 08:01 PM
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2 | 1,279 |
05-07-2010, 12:04 AM Last Post: Martin Pinckney |
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HP-25 weird behavior
02-10-2003, 05:38 PM
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3 | 1,032 |
02-11-2003, 05:58 PM Last Post: David Smith |
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HP-25/25C Potential
07-08-2013, 10:07 PM
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14 | 4,103 |
07-17-2013, 02:57 AM Last Post: Matt Agajanian |
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HP-25: battery problems
06-29-2002, 01:18 PM
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3 | 1,101 |
06-29-2002, 04:36 PM Last Post: Juergen Rodenkirchen |
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HP-25: More common problems?
06-25-2002, 03:24 AM
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4 | 1,174 |
06-25-2002, 02:30 PM Last Post: Juergen Rodenkirchen |
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HP-25C ACT Chip?
11-08-2010, 05:33 PM
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0 | 671 |
11-08-2010, 05:33 PM Last Post: Mark Henderson |
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HP-25C Battery Pac
04-14-2003, 06:26 PM
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1 | 707 |
04-14-2003, 06:38 PM Last Post: David Smith |
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HP-25C Battery Pack
06-08-2007, 09:21 PM
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1 | 782 |
06-09-2007, 05:52 PM Last Post: Walter B |
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HP-25C Continuous Memory Calculator
06-19-2005, 12:33 PM
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1 | 751 |
06-19-2005, 02:45 PM Last Post: Andrés C. Rodríguez (Argentina) |
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HP-25C Forgets steps in memory
01-24-2007, 06:08 AM
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0 | 607 |
01-24-2007, 06:08 AM Last Post: John Garza |
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HP-25C needs chips to come back to life
06-10-2010, 03:52 PM
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2 | 1,084 |
06-10-2010, 09:20 PM Last Post: Vieira, Luiz C. (Brazil) |
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HP-25C repair
06-04-2007, 08:28 PM
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3 | 1,088 |
06-05-2007, 02:14 AM Last Post: Eric Smith |
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HP-25C Repairing
10-28-2011, 10:09 PM
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11 | 3,116 |
10-31-2011, 01:11 PM Last Post: Randy |
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HP-25C strange behaviour
04-22-2009, 09:27 AM
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14 | 3,333 |
04-26-2009, 06:21 PM Last Post: Alberto Fenini |
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