Probably around the time they were invented. They were mandatory on my ground exam (private pilot).

OOC was this a while ago? Even when I took the ground exam around 10 years ago, everyone had electronic flight computer calculators (CX-2s).

It was awhile ago (init var me == old;) - back in the era of "iPads can't be used for critical flight information, they're too unreliable".

	▲	vunderba 4 hours ago \| parent [-]
		That makes sense. The CX-2 calculators are a bit less like the iPad era and more like the equivalent of calc I/II classes which only let you use specific TI models versus an app on your smartphone. It reminds me of a family friend who's a bit older and did their scuba certification using dive tables, whereas when I did my PADI, I was able to use a dive computer.