[sdiy] DIY-BBd

[Michael Boracci]

I am trying to determine if some of the CMOS memory IC's have enough storage
cells in them to be of any use. It would require digital assistance to
address the cells and move the charges around, but could that work in
theory? Are those capacitances large enough to be of any use?

MB

-----Original Message-----
From: john mahoney [mailto:jmahoney at gate.net]
Sent: Friday, September 12, 2003 4:52 PM
To: Michael Boracci; synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] DIY-BBd


> Dear Synth-Wizards,
> Is it possible to build a BBD out of discreet components today?

In theory, yes. [Stepping way out on a long limb] It is possible to build
almost any IC with discretes. (Not DLP chips, though.)

A 1,024-stage BBD has 1,024 capacitors plus circuitry to pass the value of
one cap to the next -- it does this for each stage, every cycle. That's why
it's called a Bucket Brigade Device.

So, the number of discretes would be huge. Not quite a Pentium 4, but too
many to think about!
--
john




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