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zeeglen
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Binary Puzzle
zeeglen   1/3/2014 9:25:34 AM
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Great analysis, David!  Wonder who first invented this puzzle?

antedeluvian
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Excel
antedeluvian   1/3/2014 10:36:48 AM
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David

I do so love it when Excel is used for electonics purposes. However in your case I see it was only a tool to support your insight.

I hope you don't mind if I subvert the thread and point your readers to my blogs on the use of Excel in electronics on Planet Analog. There are at least 4 more to come over the next 6 months. One is due out any day now.

zewde yeraswork
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application
zewde yeraswork   1/3/2014 10:40:57 AM
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Could that puzzle be used somehow to some sort of practical end or application?

Max The Magnificent
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Re: application
Max The Magnificent   1/3/2014 11:22:45 AM
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@Zewde: Could that puzzle be used somehow to some sort of practical end or application?

My "knee-jerk" reaction is to say "Almost certainly!" I base this on the fact that I don't recall learning anything that did not eventually come in handy for something or other :-)

Aeroengineer
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Re: Excel
Aeroengineer   1/3/2014 12:23:28 PM
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I do look forward to your posts on Excel.

BrainiacV
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Most excellent dude!
BrainiacV   1/3/2014 1:17:37 PM
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I have a binary clock (BCD format) in my office on top of my computer to confuse people.

I'll have to print up a copy of those cards for my own neferious purposes.

David Ashton
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Re: Excel
David Ashton   1/3/2014 4:55:47 PM
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@Antedeluvian - of course I don't mind!  I am also looking forward to more of your articles.   I have a very good book called Excel by Example by a guy called Aubrey Kagan (unfortunately now out of print) which has some very good Excel tricks in it.   I learned a lot from that! :-)

David Ashton
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Re: application
David Ashton   1/3/2014 4:59:07 PM
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@Zwede - as I said, for the uninitiated you could use it as a decimal to binary converter for numbers less than 64.  Just write "32 16 8 4 2 1" and underneath those numbers, write a 1 if your number is on the corresponding card, and 0 if it is not.  Bingo - Binary representation of your number!

betajet
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Octal representation
betajet   1/3/2014 6:04:11 PM
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You can see how the cards work more easily if you represent the numbers in octal.  But then you'd have a harder time amazing your friends and relatives with your mind-reading ability.

Wnderer
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Dynomite Magazine
Wnderer   1/4/2014 9:23:05 AM
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I had those cards. They came as an insert in Dynamite Magazine, a kid's magazine back in the seventies.

http://www.retroland.com/dynamite/

Thanks for the memory.

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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