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I do not understand "source" and "sink" in the following passage. I tried to look up a dictionary and google translate but it is not clear. Could anyone explain it for me? the passage:

This application note describes how to use the EFM32 Current Digital to Analog Converter (IDAC), a peripheral that can source or sink a configurable constant current.

Thank you!

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  • What did a dictionary say for source and sink? Though the technical definitions are not the first ones, look through all the meanings of the words. Also consider that they're being used metaphorically. – Mitch Jul 23 '15 at 12:29
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    It's terminology used in electronics, and it transferred from there to computers. A "source" is just that, a provider of voltage, data, or some other entity. A "sink" is where the stuff goes. (Of course, with data all to often much of it goes down the toilet, but that's an entirely separate issue.) – Hot Licks Jul 23 '15 at 12:57
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These terms are often used in computer hardware, software and testing.

  • source would mean to produce and
  • sink to consume something, in this case a configurable constant current of electricity.
  • The Current source and sink is answer what I find. According the link, they explained that: the term current source refers to a boundary where charge flows from locations where it is not measured to locations where it is measured. A current sink may refer to the boundary where charge flows from locations where it is measured to locations where it is not measured – Next Jul 24 '15 at 4:25

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