TTL homebrew CPUs
ajp166 at bellatlantic.net
Tue Jul 10 05:48:59 CDT 2007
>Subject: Re: TTL homebrew CPUs
> From: Dave McGuire <mcguire at neurotica.com>
> Date: Mon, 09 Jul 2007 18:45:52 -0400
> To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
>On Jul 9, 2007, at 5:51 PM, Tony Duell wrote:
>>> recycled industry application notes), that required some special
>>> only available at their or associated stores. Having seen the nth PIC
>>> application that basically blinks a LED - what my generation built
>>> 2 transistors, 2 capacitors, 4 resistors - is lame.
>> You're making me feel very old. When I was a kid, I used to make a
>> bulb blink using one resistor and one capacitor.
> Relaxation oscillators are fun. I like the UJT version as well,
>though UJTs are getting harder to find than they once were. I have
>two or three 2N2646 UJTs left.
Yes but you can build your own UJT using a 2n3904 and 3906 plus two resistors.
>Port Charlotte, FL
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