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what is this chip?

Discussion in 'Electronic Components' started by Bjarne, May 22, 2007.

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  1. Bjarne

    Bjarne Guest

    Hey

    I've got this keychain from the 80'ies. It's a transparant plastic
    thingie with a 16-legged chip inside.

    I'm curious about what it is? On the chip is printed:
    93415-DC
    F 7715

    And on the plastic it says:
    COMPUTER
    GESELLSCHAFT
    KONSTANZ
    MBH

    Anyone know what it is?
     
  2. Al

    Al Guest

    It's a Fairchild (F) memory chip date coded 7715 (1977 week 15)

    Check this out.

    http://www.datasheetarchive.com/search.php?s=0&q=93415

    Al
     
  3. Bjarne

    Bjarne Guest

    It's a Fairchild (F) memory chip date coded 7715 (1977 week 15)

    Thanks! Is there anything special about this chip? Just wondering if
    there is any reason that it got turned into a keychain. I know very
    little about electronics but 1977 seems quite early for a memory chip?
     
  4. Eeyore

    Eeyore Guest

    It's probably duff / surplus.

    http://en.wikipedia.org/wiki/Dynamic_random_access_memory

    Graham
     
  5. It's late by then, a good portion of a decade had passed since the
    first RAM ICs had come along, and that may even be too short a time.

    But, there was really rapid growth, as the companies geared up and
    demand increased. I didn't look up the IC, but something that was
    around in 1973 would hardly be useful by 1977, because more memory
    was desired and it was available. So the only reason someone would
    want a 256 by 1 bit RAM from early on was either to replace an IC
    in an existing unit, or for novelty/historical reasons.

    Michael
     
  6. Al

    Al Guest

    Thanks! Is there anything special about this chip? Just wondering if
    there is any reason that it got turned into a keychain. I know very
    little about electronics but 1977 seems quite early for a memory chip?[/QUOTE]

    In the "early" days, novelty items were made of of defective devices'
    things like tie tacks, pendantes, etc.

    Since I had access to fairly large numbers of defective devices, I used
    to make little animals out of them by soldering them together. For
    example, I would solder two 14 DIPs together to make alligator jaws.
    These in turn would be soldered to a 40 pin ceramic DIP which was the
    body. And then you get the picture, other suitable components for the
    tail and legs. But that was in the late 70's, early 80's.

    Today they would be banned because they would have LEAD solder in them!
    Jeesh!

    Al
     
  7. Guest

    Guest Guest

    and , by now, YOU have lead/antimony/tin/arsenic/ and who knows (mercury)
    from the soldering fumes in YOUR head!

    despite my cautious use during my formative years ( many many years ago) it
    was not uncommon to hold the solder in my teeth as a substitute "panavise"
    and inhale the fumes as i assembled god knows what ever into a miracle
    invention.

    and to pour the curious liquid mercury from a tip-switch around in my nubile
    porous skinned hand to amuze myself.

    no problem, no worries, and no warnings from those teaching me about the
    electronics either! WOW, and i actually have survived. even at some
    diminished capacity beyond the effect of the gallons of beer.wine,jack
    daniels, Graves Grains and whatever during my college and after times,
    office parties and gatherings, weddings and other.

    then there's the years of following the exhausts of countless Tetra ethyl
    added gasoline powered vehicles during slow slow slow pileups on the
    freeways, and the tons of soot from truck, power plants, and clear cut/burn
    farmers.

    and we worry so much about our childern? sorry folks, it's just getting
    WORSE!

    hava great day! ;-))

    In the "early" days, novelty items were made of of defective devices'
    things like tie tacks, pendantes, etc.

    Since I had access to fairly large numbers of defective devices, I used
    to make little animals out of them by soldering them together. For
    example, I would solder two 14 DIPs together to make alligator jaws.
    These in turn would be soldered to a 40 pin ceramic DIP which was the
    body. And then you get the picture, other suitable components for the
    tail and legs. But that was in the late 70's, early 80's.

    Today they would be banned because they would have LEAD solder in them!
    Jeesh!

    Al[/QUOTE]
     
  8. Franc Zabkar

    Franc Zabkar Guest

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