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RAM Timeline

By ruhil2

  • Analytical Engine

    Analytical Engine
    Charles Babbage starts to build his Analytical Engine, witch reads memory from punch cards

  • drum memory

    drum memory
    Gustav Tauschek invents drum memory in Austria.

  • first patent

    first patent
    Konrad Zuse applies for a patent for his mechanical memory to be used on his computer. This computer memory is based on sliding metal parts.

  • The Atanasoff-Berry Computer

    The Atanasoff-Berry Computer
    The Atanasoff-Berry Computer has 60 50-bit words of memory in the form of capacitors mounted on two revolving drums. In the case of the machine running out of storage, it also uses punch cards.

  • Magnetic drum memory

    Magnetic drum memory
    Magnetic drum memory was made by a group of three people. An Wang invented the magnetic pulse controlling device, Kenneth Olsen invented vital computer components, Jay Forrester invented random-access, coincident-current magnetic storage.

  • Magnetic Core Memory

    Magnetic Core Memory
    Jay Forrester conceives the idea of magnetic core memory as it is to become commonly used, with a grid of wires used to address the cores.

  • first commercial computer

    first commercial computer
    Ferranti Ltd. completes the first commercial computer with 256 40-bit words of main memory and 16K words of drum memory. Amazingly only eight were sold.

  • the next advancement

    the next advancement
    The EDVAC computer is completed with 1024 44-bit words of ultrasonic memory.

  • HP2116A real-time computer

    HP2116A real-time computer
    Hewlett-Packard releases their HP2116A real-time computer with 8K of memory. also at the same time, intel begins to sell their first semiconductor chip with 2,000 bits of memory.

  • Intel keeps going

    Intel keeps going
    Intel releases the first 1 KB RAM chip, the largest of any at the time. and switches to being known for computer microprocessors

  • the 1103 chip

    the 1103 chip
    Intel releases the 1103 chip, the first generally available DRAM memory chip.

  • 1101 chip

    1101 chip
    Intel releases the 1101 chip, a 256-bit programmable memory, and the 1701 chip, a 256-byte erasable read-only memory (EROM).

  • The Altair computer

    The Altair computer
    Personal consumer computer Altair released, it uses Intel's 8-bit 8080 processor and includes 1 KB of memory. Later in the same year, Bob Marsh manufacturers the first Processor Technology's 4 kB memory boards for the Altair.

  • Apple Computers gets into the scene

    Apple Computers gets into the scene
    Apple Computers releases the Macintosh personal computer. It is the first computer that came with 128KB of memory. The 1 MB memory chip is developed later that year.