Ah,second childhood, bednobs. The slide rule must have still been around in his youth. Ask him about a Wheatstone's bridge; bet they don't use those now ,either; and the ancient Chinese word for trigonometry Soh- Cah- Toa. As for log tables, well,they were pretty useful, once you got the hang of them.
Today's children know what an algorithm is (a what ? !) and are probably conversant with Boolean algebra, though they may not know that. And they have calculators,spoiled brats !