From: Jim Thompson
Subject: Re: Digital divide by ten, 1949 style
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Date: Sun, 15 Sep 2002 17:30:04 GMT
On 15 Sep 2002 09:46:32 -0700,
firstname.lastname@example.org (Tim Shoppa),
In Newsgroup: sci.electronics.design,
Entitled: "Digital divide by ten, 1949 style",
Wrote the following:
|In a recent thread on sci.electronics.design, we explored some approaches
|to divide-by-ten without using IC's. (Go to http://groups.google.com/ and
|search for "Decade counter without IC's"). Here's an approach I found
|in Vol. 19 of the Radiation Laboratory Series, _Waveforms_:
|They do it with just ten tubes, and the output is BCD on 4 neon bulbs.
|Comments on similar counters would lead me to believe that the design is
|good to a few MHz.
|Maybe they do cheat a little with respect to the previous thread; is a
|dual triode the 1949 equivalent of an IC? :-)
It's the tooob equivalent of the discrete transistor T-Flop I posted
awhile back... diode steered.
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| Jim-T@analog_innovations.com Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
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