1960’s-70’s automated-machinery cards collections computer computer-punch-cards data-encoding data-input data-output data-processing-industry data-storage decks-of-cards digital-data early-digital-computers flexible-write-once-medium format holes mainframe-data-processing now-obsolete once-common paper paper-ephemera predefined-positions punch-card punched-card retro specialized stiff-paper storage-medium tabulating vintage