Punccard

Computer hard drive history

By jscolon

  • Punched Card

    Punched Card
    punched card

  • Selectron Tube

    Selectron Tube
    Selectron Tube

  • William Tube

    William Tube
    William Tube

  • Drum Machines

    Before using disks, storage units used magnetic drums referred to as drum machines or drum-memory computers. The first commercial drum machine was developed by the Engineering Research Associates of Minneapolis and used by the U.S. Navy ERA 110. Drum machines were used throughout the early '50s.

  • Ramac

    Ramac
    Ramac

  • First Gigabyte hard drive

    First Gigabyte hard drive
    The first Gigabyte hard drive is introduced by IBM and weighed 550lbs with a price of $44,000.