@NanoBookReview @enigmatico well, the convention says it's 9!
https://mstdn.social/@kkarhan/110948237835457339

And good calculaters like the #TI30-Series do follow that convention...

There's a reason #TexasInstruments charges absurd amounts for their shit, because like Lab Equipment from #Agilent, #Fluke as well as #RohdeUndSchwarz their calculators are accurate!

Ah, die Drei Geschlechter bei #RohdeUndSchwarz:

Quelle:
https://www.rohde-schwarz.com/de/produkte/cybersicherheit/netzwerkverschluesseler_334093.html