IBM invented the PC in 1979.
IBM . The company originated in 1911 as the Computing-Tabulating-Recording Company ( CTR ) and was renamed `` International Business Machines '' in 1924 . Inventions by IBM include the automated teller machine ( ATM ) , the PC , the floppy disk , the hard disk drive , the magnetic stripe card , the relational database , the SQL programming language , the UPC barcode , and dynamic random-access memory ( DRAM ) .