Memmory retention without battery in pioneers

[emece67]

(03-29-2016 03:07 PM)wojtek Wrote:  My 41c (born 1981) keeps data and settings for 10 days after the batteries are taken off. The technology of the RAM memory applied in 41c was different and certainly more expensive than nowadays?

Definitely, there's more than simply a matter of currents. A 41 has a greater power consumption when slept than a 35S.

I do not know the details of the technology used on hp chips from that era, but I always assumed it was different than that used nowadays. In fact, the processor in the (full nut) 41 series is defined by hp as: "[...]highly intelligent, bit serial, low power, pseudo non-volatile CMOS processor".

In any case, my point is that, nowadays, a capacitor will not cure our machines from loosing all data when cells are removed for a long period.