Calculators that allow direct operations on data stored on persistent storage?

[Garth Wilson]

(02-24-2018 11:15 AM)pier4r Wrote:  

(02-19-2018 03:31 AM)Garth Wilson Wrote:  The HP-71 does what I think you're looking for. Files reside in RAM (not flash or EEPROM), and can be expanded or contracted easily, and it's pretty transparent from the user's perspective.

Yes exactly, thanks for the info.
Anyway some limitations on my side: no 71B (and no budget for it), the ram in the 50g is already of the same size, and no "modern" connection with a computer as far as I know.

There is the PIL Box for the HP-IL connection to a PC, but I know almost nothing about it. (You can search for it on this forum.) You can go a long ways in interfacing if you go a long ways in spending money too though. I have the HP-IL interface converters to RS-232, parallel, IEEE-488, and 80-column monochrome video. In the mid-to-late 1980's at work, I used 71B-Talk, software for both the 71 and a PC to link them and use the PC's keyboard as a full-sized keyboard for the 71, use the PC's monitor as a monitor for the 71, and I believe you could transfer files and so on too. I don't remember any details. I believe it used an RS-232 interface.