HP Forums › HP Museum Forums › Old HP Forum Archives v
HP 95LX prototype PCB

Linear Mode
HP 95LX prototype PCB


▼
Frank Boehm (Germany) Offline
Unregistered
Posts: 415
Threads: 19
Joined: Jan 2005
#2
02-26-2009, 11:52 AM

Well, that 95LX was only semi complete and didn't power up - so I disassembled it. Look what I found:











No wonder it didn't boot: this one has 3 x 256kB RAM installed - but no ROM. It probably used a Flash card to boot.


Both ICs are prototypes: marked as "SAMPLE" and "ES" (aka "Engineering Sample").


(it came in a standard enclosure with standard SN, no hint of a prototype...)

Find

Possibly Related Threads…
Thread Author Replies Views Last Post
  HP 95LX - will surely become more collectible Charles C(UK) 9 2,724 09-11-2013, 07:15 AM
Last Post: Dave Britten
  HP Prime (DVT Prototype) Hardware Details Adrien Bertrand 7 2,874 08-10-2013, 12:04 PM
Last Post: Eric Smith
  Identify HP-01 Prototype parts aj04062 3 1,601 06-11-2013, 09:49 PM
Last Post: aj04062
  No luck getting flash disk to work in 95lx Harald 7 2,981 03-18-2013, 08:11 AM
Last Post: Harald
  Updated HP-41 Flex-PCB replacement guide. Diego Diaz 2 1,382 03-12-2013, 12:36 PM
Last Post: Diego Diaz
  PCB pictures of a HP10B, HP20S or HP21S? Christoph Giesselink 1 1,159 12-17-2012, 10:19 PM
Last Post: Randy
  HP-41C pcb connector upgrade Hans Brueggemann 6 2,535 05-19-2012, 10:17 AM
Last Post: aurelio
  Re: HP calculator prototype? David Griffith 1 1,072 02-26-2012, 09:14 PM
Last Post: Don Shepherd
  HP calculator prototype? Michael Eckstein 2 1,333 02-26-2012, 05:55 AM
Last Post: Michael Eckstein
  HP 95LX to PC connection John West (UK) 3 1,745 02-24-2012, 08:53 AM
Last Post: John West (UK)

Forum Jump: