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Full Version: HP-41 back sticker difference
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I look at my 2 HP-41CV back sticker and i found a logo i don't know the meaning : On my Fullnut this logo is not present but on my 41-CV halfnut there is a kind of "impeller" or a kind of disk with the inscription "871B" in the lower right corner. Does this means someting for somenone?

I'm looking closely to my 2 CV to see some differences i can count. I also found that the key feeling is smooter and the clic is less "loud" on the halfnut than the fullnut; is it true of just because my halfunt has more mileage!

I did a CAT 0 at the same time on the 2 CV and the fullnut finish the listing before the halfnut (the 2 calculators are "memory lost" before the "benchmark"). Is the fullnut faster than the halfnut?

Is there some kind of program i can run on them and see some difference between the 2 CV version or bug present on one only?

I just receive, result of a trade, my first halfnut so that's why i seems so curious about small details ;-)

Thanks!

Michel

AFAIK the 871B sign stands for something like: Tested to comply with some specific radio emission/interference limits, or alike.

Raymond

Don't know anything about the 41's but if the keypresses feel softer due to miles;), there should be differencies between the keys. I noticed this on my heavily used 18C; the 'equals' key has actually a significantly different feel. Do your 41's keys all feel the same?

Thomas

Yes they feel all the same.

Then your concern about wear might not be justified. Just enjoy your 41:).

Thomas

The keys did change slightly over the years, so I'm not surprised if they feel different.

The speed of a HP-41 is not an exact science. The frequency is made from discrete components, and not a chrystal. So different individuals might differ as much as 30%. On the fullnuts you can change a capacitor to increase the speed. The halfnuts were a bit more tricky, as well as not being so forgiving to frequency increases.

But basic speed comparision might show anyone being faster, depending on the individual.