HP-71B and some (to me) interesting modules

[Sylvain Cote]

(08-23-2022 07:09 PM)Garth Wilson Wrote:  Maybe someone here knows otherwise; but I think the batteries in the RAM modules are only there to hold the memory if you remove the modules from the computer such they they would not be able to use the computer's power. As long as you leave the module in the port and the computer can keep its onboard RAM and clock alive, the modules should be fine without their own battery. I have a CMT 96K card-reader-port RAM and 64K front-port RAM in mine.

Yep! the batteries of my front-port/card-reader CMT/HHP RAM modules are dead and all of them are perfectly working, they just loose their content when removed from the 71B.