Infrastructure Instruction

I remember when I was young and went with my dad to the local university book store to buy his first calculator. The device, which was something I’d never seen before, was about the size of a paperback book, had red-lined readout, could do the basic arithmetic functions and cost almost $70. Now when you go to a conference or trade show some vendors give you a credit card sized calculator. Just as the calculator has changed in size and …


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