So now when we come to the problem I explain that an adding machine is like a calculator. Adding machine tape, I say, is much like the tape used on some calculators or cash registers.
The other day I was correcting a student who didn't seem to get it. He had just added a line of equal signs between his input boxes and result box but didn't have the input numbers appear in the result box on separate line and a separator line and the result. Turns out he had a more fundamental question about the problem. "What is a tape?" he asked.
Shows how technology is changing. It seemed the cash register analogy wasn't working anymore. Someone suggested it was like the tape you get from the gas pump or an ATM. I wonder how long those examples will hold true!