What are the facts you remember for no specific reason
What are the facts you remember for no specific reason
Does anyone else find themselves recalling random facts for no apparent reason? Like,
Charlie Chaplin entered a Charlie Chaplin lookalike contest and lost
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2 facts about the CMOS battery on a motherboard: CMOS stands for "complimentary metal oxide semiconductor". Its a 2032 watch battery.
Also, the 2032 numbering indicates its physical size: it's 20mm x 3.2mm. There are for example 2025's (like in my car remote) that are 20mm x 2.5mm.
And CMOS refers to what the battery was powering on the motherboard (a small amount of CMOS static RAM) rather than anything about the battery itself. I don't know if motherboards still use any static RAM, the batteries might only be there to power the clock these days, making the name just a historical convention.
It goes beyond button batteries too. Lots of batteries use the same system. For instance, many flashlights run off of 18650 cells.