4x4 multiplier IC

Discussion in 'General Electronics Chat' started by assassinelec, Dec 27, 2011.

  1. assassinelec

    Thread Starter New Member

    Mar 22, 2011
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    0
    hi all,
    can someone tell me please how i can build a 4x4 multiplier IC, i don't want to buy it...i want to make it, is there any link or guide can help me with that ? any help would be appreciated.
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,425
    3,359
    Use a ROM chip.
     
  3. RRITESH KAKKAR

    Senior Member

    Jun 29, 2010
    2,831
    89
    How........?
     
  4. MrChips

    Moderator

    Oct 2, 2009
    12,425
    3,359
    A 4 x 4 multiply will have 256 possible results with 8-bit result.
    All you need is a look-up table of 256 bytes, that is, 8-bit address and 8-bit word size.
    There are many 256-byte PROMS available and execution speed would be very fast (10ns or faster).
     
  5. joeyd999

    AAC Fanatic!

    Jun 6, 2011
    2,675
    2,723
    For fun, attached is an 8x8 hardware multiplier written in Abel for a PLD. I wrote this back in the mid '90s. Don't ask me how it works. I don't remember. IIRC, it computes partial products and sums them together.
     
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