Hi Rob,

The characters aren't 'O' (as in Otter), and 'I' (as in Insect), but the 
numbers '0' (Zero) and '1' (One). These represent the basic digital levels 
where '0' (Zero) means off and '1' (One) means on.

Russ Poffenberger

At 04:23 PM 7/24/2006, you wrote:
>For the life of me, I can't remember what specifically the "O" and the
>"I" stand for on the power on/off switch, such as on a power supply.
>I googled but found nothing that spelled it out clearly.
>
>I'm assuming "O" stands for "Off" and "I" stands for "On", but would
>like to know what the nomenclature "O/I" actually stands for.  Years
>ago (I thought) I knew, but just can't remember ... getting old here!
>
>Rob Els
>
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