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by SoftTalker 583 days ago
Some old "dumb" terminals could be switched into 132-column mode, this corresponded to the 132 columns on the line printers that printed on wide fan-fold green-bar paper.

The 80 column standard for a line of code goes back to the 80 columns on a standard IBM punch card. Why 80 columns on a punch card? I don't know that one.