IBM, how it all started - Hollerith Census Machine 1889,
Computer Punch Cards - Historical Overview -
Punch Card Programming - Computerphile
American inventor Herman Hollerith died. He constructed the electromechanical tabulating machine. It was capable of summarizing data stored on punched cards. Hollerith developed the machine when he was working for the U. S. Census Bureau. Later he started his Tabulating Machine Company, which later developed in IBM.