[sdiy] can someone explain latches?

Dan Snazelle subjectivity at hotmail.com
Thu May 7 01:27:17 CEST 2009


ok thanks 

i am going to buy that book and also get out the cmos cookbook

i want to be ready when these da/ad chips get here





--------------------------------------------
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http://www.myspace.com/lossnyc

(updated monthly)

http://www.soundclick.com/lossnyc.htm



http://www.indie911.com/dan-snazelle

(or for techno) http://www.myspace.com/snazelle

ALSO check out Dan synth/Fx projects:

AUDIO ARK:

www.youtube.com/watch?v=TJRpvaOcUic

www.youtube.com/watch?v=BqIa_lXQNTA&feature=channel_page

www.youtube.com/watch?v=V4nJPjGgOcU&feature=channel_page

and soundtrack/design work:

NEW: check out Dan's sound design from the 1998 award winning film SAFARI by catherine chalmers

http://www.catherinechalmers.com/videos.cfm






----------------------------------------
> Date: Wed, 6 May 2009 19:25:55 -0400
> From: harrybissell at wowway.com
> To: dixon at interchange.ubc.ca
> CC: subjectivity at hotmail.com; synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] can someone explain latches?
>
> A "type D register" is like a digital S/H
> The "transparent latch" is like a digital T/H (track / hold)
> H^) harry
>
> ----- Original Message -----
> From: David G. Dixon 
> To: 'Dan Snazelle' , synth-diy at dropmix.xs4all.nl
> Sent: Wed, 6 May 2009 18:21:38 -0400 (EDT)
> Subject: RE: [sdiy] can someone explain latches?
>
> Dan,
>
> A "latch" is really just a transparent flip-flop. Quoting Horowitz and
> Hill:
>
> The term "latch" is usually reserved for a special kind of register: one in
> which the outputs follow the inputs when enabled and hold the last value
> when disabled. Since the label "latch" has become ambiguous with use, the
> terms "transparent latch" and "type D register" are often used to
> distinguish these closely related devices."
>
> Hence, a latch will follow the data input whenever it is enabled. A
> register follows the data input only on the transition of a clock pulse.
>
>
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