Re: why do we use these

Bob Myers wrote:
"dhana" <dhana123@xxxxxxxxx> wrote in message news:1161678951.772094.110690@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

what is the use of composite signal generator, zero crossing detector
and comparator


1. Composite signal generators are used in those applications
where all-metal ones would be too heavy.



2. Zero crossing detectors are used when it is important to
recognize and/or count the number of zeroes which cross
one's path. In many cultures, having your path crossed by a
zero is analogous to our beliefs regarding a black cat crossing
your path.

This is important in some areas because zeroes are slippery and can wiggle through where a one can not. The ones may get stuck in the bit grate, whereas the zeros can slither through. Counting these is important in defining the efficacy of a bit grate (measured, of course, in it's duty cycle).

Cheers

PeteS



3. "Comparator" is a term which derives from the same Latin
root as the word "compose," i.e., it is a device which puts
stuff together, as opposed to a "separator," which of course
takes stuff apart.

Best of luck on the homework!

Bob M.


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