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6163Re: 128K Mac restored for MARCH

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  • Herb Johnson
    Oct 2, 2007
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      "B Degnan" <billdeg@...> wrote:
      >

      > What is the battery for?


      The "PRAM" memory requires a battery to retain its contents. Some non
      essential settings are there. In addition, the battery runs the time
      of day clock. Running a small circuit all the time for years, on
      exposed copper circuits, in a humid environment, turns the copper to
      copper oxide - like your car battery's terminals. The battery will
      die, then crack open, and spill goop and spoil circuits. The battery
      contacts will corrode and fall off.

      In other words, batteries are evil.

      Herb Johnson
      usual Web page links, etc.
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