fx-9860gii-2 brief introduction

[Dave Britten]

(11-20-2019 12:57 PM)Mjim Wrote:  

(11-20-2019 09:17 AM)klesl Wrote:  ...also I've heard the CG50 has SDRAM which loses memory after being powered off for about an hour...
I don't observe this behaviour on my fx-CG50. I turn the calc on after 48 hours and the history is still visible at least in run- matrix, statistics, spreadsheet, graph, 3D graph.

The original link that first pointed out this difference was here:
https://community.casiocalc.org/topic/78...entry62236

Perhaps everything in "Main Memory" that has a filename is backed up to flash, while anything that is actually running in RAM (eg a complicated equation or program) is lost?

If it is backing up all the files in "Main Memory" (including the run-matrix history) as you pointed out, then that is better than what I was imagining when I first saw the comment about memory being lost. While I may not be particularly fond of the back-lit display (although the higher resolution is appreciated), the Xcas port, Python, better processing power and nicer looking exterior were strong reasons for me to look at purchasing the fx-CG50 calculator, but the uncertainty about the memory being retained spoiled all of those good points.

From an end-user perspective, it's almost exactly like the fx-9860g, i.e. nothing is lost by leaving the calculator powered off for hours/days. You'll simply notice a delay of a second or two next time you turn it on, while main memory is being restored. It's like the hibernation feature in Windows, and the TI-84 CE appears to do something very similar (it even shuts down the realtime clock, meaning you'll have to reset the time and date if the 84 hasn't been used for a few days).