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WOW! The way the mid 80's sound somebody like me who graduated in 1970 is really ancient. Back in my day you learned to use a slide rule.
A slide ruler put a man on the moon. A slide ruler saved 3 lost astronauts. A computer almost cost us a trip to the moon, but his knowledge of physics saved the mission. The lack of modern calculators and computers saved 3 lost astronauts.
I don't have a clue how to use a slide ruler, but its not a bad thing to know.