My personal calculator history

[Geoff Quickfall]

“Anecdote - every now and then a colleague in need of a calculator asks if they can use mine. I always warn them: "You're welcome to use it but you probably won't be able to." They then give me a very puzzled look, grab the 15C and walk away, only to return within seconds. They put the calculator back on my desk and grumble something like 'I can't work with this thing.'”

I like the three shift keys on the 67 and the 32SII keyboard due to there multiple colours and confusing lables.

Fun to lend that to a co-worker along with the RPN and see their reaction.

Cheers