January 8, 1889
Punched Card Calculator Patented
Herman Hollerith is issued a US patent for his punched cardcalculator. 7 years later he starts a company called the Tabulating Machine Company. In 1911, this is one of 4 companies that merge to form the company that will one day be called IBM.Punched cards were widely used through much of the 20th century in what became known as the data processing industry, where specialized and increasingly complex unit record machines, organized into data processing systems, used punched cards for data input, output, and storage. Many early digital computers used punched cards, often prepared using keypunch machines, as the primary medium for input of both computer programs and data.