Re: Seeking schematics/plans for decimal to binary (microswitch/relay) selector/controller

John Fields · 2008-01-26T01:08:22+00:00

---What, no "C"? ;)------You still have to wire up seven-segment displays, and you still haveto wire up them up to BCD to seven-segment decoder-drivers, and youhave to wire the inputs of the decoder-drivers to pulled-up orpulled-down switch contacts, so the only advantage is not having touse logic to drive the decoder inputs.Which, when you look at the price of BCD encoded rotary switchesturns out to be a serious _dis_ advantage. Go to:and filter on "BCD" and "Panel Mount" for a shock.I'm sure that there are cheaper versions out there, but If I wasgoing to do it that way I'd use a cheap mechanical quadrature shaftencoder.-- JF

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John Fields 18 years ago

>> I am interested in building a "selector" gadget for devices that take

>> jumpers
>> to select a program, such as this game cartridge where you have 5
>> jumpers
>> to select program #0-31 (the jumpers represent the binary number):
>
>
>
>Why don't you just use a rotary switch which opens and closes four
>outputs. You can get binary coded decimal or hexadecimal - if you use
>a hex switch your users have to understand the the sequence
>0,1,2,3,4,5,6,7,8,9,A,B.D,E,F.

What, no "C"? ;)

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John Fields 18 years ago

What I like to use for stuff like that is a sticky-back repro film like Rayven 420, a polyester film with an adhesive backing so you don\'t have to use transfer tape. The part that\'s nice about using transfer tape, though, is that you can print the mirror image of the panel on the film and then stick it to the panel toner side down. That makes the image right-side up and puts the film between the outside world and the toner, keeping it from getting scuffed up.

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John Fields 18 years ago

OK, the OP has all of the stuff I proposed and by now he must have read your "contribution", so let's wait and see what he decides he wants to do. Unfortunately, if he decides in my favor, I'm sure you'll heap some abuse on him for making that choice since you've already done so with that slur demeaning his .sig for no reason at all other than to drag him down.

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Michael A. Terrell 18 years ago

'Your audience' is waiting by himself in an Interstate Highway rest room for his next gay sex partner.

Service to my country? Been there, Done that, and I\'ve got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida

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Michael A. Terrell 18 years ago

Only becasue it was crosposted to a newsgroup where I didn't have you kill filed, but that is being take....................

Service to my country? Been there, Done that, and I\'ve got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida

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John Fields 18 years ago

You mean USENET?

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John Fields 18 years ago

OK, but just make sure that you exit bowed and walking backwards and that you don\'t turn around until you\'re clear of the building. As for the lexicon, it\'s Webster\'s college dictionary, ISBN 0-679-40110-5 : ISBN 0-679-40110-8 which, BTW, you had nothing to do with with my purchasing. If you\'d like to interact with those of us who know how to use American English effectively, I suggest you buy a copy of the dictionary and learn the nuances of the language.

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John Fields 18 years ago

Not really. There _are_ differences between your English and my English, you know.

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John Fields 18 years ago

Slightly less of a mess, I\'d say, since we\'re not saddled with those \'ou\'s and \'re\'s which are really pronounced the way we spell them.

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John Fields 18 years ago

Of course, but slightly less of a mess is still better than slightly more of a mess.

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John Fields 18 years ago

Stop being disingenuous. On the one hand you admit that our dictionaries tend to clear up messes which existed earlier, while in the same breath you seem to wish that we\'d not have done that, and that we should have adhered to, presumably, the old rules with which you feel comfortable. On top of that, I\'m sure there are words in Australian English which are peculiar to that language and aren\'t part of the OED. Should they not have been coined as well?

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John Fields 18 years ago

well

than

Really? http://www.krysstal.com/ukandusa.html Actually, he made it simpler for us by more closely paralleling the spelling we read with the phonemes we "hear" when we read. Whether he made it simpler for you is of little concern since you have your precious traditions and habits and, good or bad, you\'re certainly not going to break them for any American "yokel" who shows you a better way.

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John Fields 18 years ago

That English isn\'t, pure-and-simple, a single language. Ever since we left England, American and British English have been evolving in different ways, what with the independent addition and deletion of new words, idioms, and grammatical constructs on both sides of the pond. Taken one step further, Australian English is different from both American and British English and I suspect each language will continue to evolve as the needs/wants of its users change over time.

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John Fields 18 years ago

As far as the spoken language goes, that may be true. However, when it comes to written English, there have been many occasions when you responded inappropriately to written American English and/or seemed to have entirely missed the point.

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Michael A. Terrell 18 years ago

Where else would an antique prefer to be?

-- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85.

Michael A. Terrell Central Florida

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Re: Seeking schematics/plans for decimal to binary (microswitch/relay) selector/controller

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