When I was a highschool kid we use as perforated card system (you punched them out with a paper clip). We were charged for usage by the card 1c each (1c was a l

When I was a highschool kid we use as perforated card system (you punched them out with a paper clip). We were charged for usage by the card 1c each (1c was a lot more back in the 70s). We used to share and recycle cards "anyone got a 'goto 10'?"