- From: Frank Mori Hess <fmhess_at_users.sourceforge.net>
- Date: Wed, 2 Oct 2002 14:01:37 -0500
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday 02 October 2002 12:03 pm, Calin A. Culianu wrote: > On Wed, 2 Oct 2002, Tim Holy wrote: > > > Your signals are well-buffered, right? I've occasionally seen weird > > things with the multiplexer putting junk back on the channel when using > > e.g. just a transistor to buffer signals. > > What do you mean by well-buffered? I am a programmer more than a hardware > guy, so to me a buffer is simply a big chunk of memory you use for data. > What do you mean by that word in a hardware/signalling context? > The idea of a buffer in electronics is something that prevents unwanted interactions between different parts of a circuit (for instance an input drawing too much current from an output and causing its voltage to droop). It's usually essentially a unity gain amplifier, which might seem useless except it has the desireable property of having a high input impedence and a low output impedence. An infinite impedence for inputs and zero impedence for outputs is a common approximation, since it can let you treat a large circuit as a collection of independent small circuits with inputs and outputs. - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE9m0KT5vihyNWuA4URAnoGAJsEfMPDKe/FQapdd2X4TXKXPaxF+QCfVpl9 zHyiNaA43sQTDKjgYsv20Vw= =UVXr -----END PGP SIGNATURE-----
Received on 2002-10-02Z18:01:37