"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.
usual Web page links, etc.