[time-nuts] Frequency subtraction with D-flip flops
Poul-Henning Kamp
phk at phk.freebsd.dk
Mon Jul 1 20:44:28 UTC 2013
In message <201306250015.r5P0FGEj007763 at mail6c40.carrierzone.com>, ed breya wri
tes:
>and trying to get my head around how a DFF can take the
>difference between two frequencies.
Try first to think about what happens if you XOR the two
signals, then convince yourself that the DFF basically does
the same thing.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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