100 anni di IBM – The IBM Punched Card

  The IBM Punched Card   From the beginning of tabulation, stiff rectangular cards punched with holes became the way data was recorded and stored.   As IBM grew to dominate data processing by the 1920s, its cards—which only worked on IBM machines and vice-versa—became the global industry standard. In 1928, IBM improved on the cards’ design so more data … Continua a leggere