1966 5 megabytes 62,500 punched cards ref.What 5 megabytes of computer data looked like in 1966: 62,500 punched cards, taking four days to load.https://www.facebook.com/HistoricPhotographs/posts/pfbid02PhT1jrkBbMQGgbed86Hftf3xbyxSmMbJkTakMYBTagJxMCUaEJKHeysscgvqUnNUl