For at least a couple of decades beforehand: https://en.wikipedia.org/wiki/Punched_card#IBM_80-column_punched_card_format_and_character_codes https://en.wikiped

For at least a couple of decades beforehand: https://en.wikipedia.org/wiki/Punched_card#IBM_80-column_punched_card_format_and_character_codes https://en.wikipedia.org/wiki/Punched_card#IBM_80-column_pun...