Power Source
RTCs often have an alternate source of power, so they can continue to keep time while the primary source of power is off or unavailable. This alternate source of power is normally a lithium battery in older systems, but some newer systems use a supercapacitor, because they are rechargeable and can be soldered. The alternate power source can also supply power to battery backed RAM.
Read more about this topic: Real-time Clock
Famous quotes containing the words power and/or source:
“The power of this experience [fatherhood] can never be explained. It is one of those joyful codings that rumbles in the species far below understanding. When it is experienced it makes you one with all men in a way that fills you with warmth and harmony.”
—Kent Nerburn (20th century)
“We are constantly railing against the passions; we ascribe to them all of man’s afflictions, and we forget that they are also the source of all his pleasures.”
—Denis Diderot (1713–1784)