71b memory question


I've seen memory modules for the 71b which plug into the card-reader port.

Do these modules act as RAM or do they just act like electronic disks?


> Do these modules act as RAM or do they just act like electronic disks?

yes :-)

They are part of the main address space of the 71B. However, they can be configured as non-volatile RAM disk depending on your requirements.



Most of these card reader RAM modules come with a battery so you can remove them and reinstall them later and not lose any data.


The largest I've ever seen is a CMT (Corvallis Microtechnology, Inc) 128 Kb RAM.

I've got one, it looks terrific and works extremely well, you
can dimension and work with a complex matrix up to 95x95,
which is ideal for large circuit analysis, or a 135x135 real matrix, for curve fitting and forecasting.

Possibly Related Threads...
Thread Author Replies Views Last Post
  41 User Memory vs System Memory Gerry Schultz 6 445 07-01-2012, 12:02 AM
Last Post: Monte Dalrymple
  HP-71B HP-IL module question J-F Garnier 9 465 03-31-2012, 07:12 AM
Last Post: J-F Garnier
  HP-71B: fastest memory copy? Hans Brueggemann 5 336 02-07-2012, 03:32 AM
Last Post: Hans Brueggemann
  HP-IL 71B to 71B via HPIL Geoff Quickfall 11 594 12-01-2010, 06:55 PM
Last Post: Michael Meyer
  Question about programming the HP-71B Namir 27 1,208 11-28-2010, 01:50 PM
Last Post: Egan Ford
  HP-71b memory / chip select access - How is it done? peter a walker (papwalker) 2 182 08-26-2008, 10:07 AM
Last Post: peter a walker (papwalker)
  Hp calculator (41CV/71B) startup question Kou Tadayoshi(United States) 6 342 05-06-2008, 04:39 PM
Last Post: Kou Tadayoshi(United States)
  Quick question about the 71b Geoff Quickfall 5 303 05-02-2008, 02:25 PM
Last Post: Geoff Quickfall
  Learning Basic....and a question about MAKELEX in Joseph Horn's "HP-71B BASIC MADE EASY" Geoff Quickfall 24 1,070 04-30-2008, 04:16 PM
Last Post: Egan Ford
  HP-71B CMT RAM module question J-F Garnier 7 459 02-03-2008, 09:09 AM
Last Post: Etienne Victoria

Forum Jump: