Talk:Seven-segment display character representations

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Electronics (Rated Start-class)
WikiProject icon This article is part of WikiProject Electronics, an attempt to provide a standard approach to writing articles about electronics on Wikipedia. If you would like to participate, you can choose to edit the article attached to this page, or visit the project page, where you can join the project and see a list of open tasks. Leave messages at the project talk page
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
 ???  This article has not yet received a rating on the project's importance scale.

Which (portable?) media player?[edit]

Hello, could the original poster of the text examples please include the name of/link to the specific media player in question? Or was it a software player?--Wernher 07:13, 5 October 2007 (UTC)

Segment shapes[edit]

I don't remember where I saw non-hexagonal segment shapes: they were curved and non-regular, AFAIR. Somebody might be able to find a reference and add it to the article. —Preceding unsigned comment added by (talk) 14:53, 14 May 2008 (UTC)

I see a few non-hexagonal segment shapes in a seven-segment display at File:LCDneg.jpg, [1], [2], etc.
I also see non-hexagonal segment shapes in non-seven-segment displays: [3].
Is that what you are looking for? -- (talk) 00:40, 6 August 2009 (UTC)

Diacritics for French, German, Spanish, etc.[edit]

What about French and languages that require diacritics?--Sonjaaa (talk) 15:41, 18 August 2008 (UTC)

German does not "require" diacritics. For example "ö" kan be written as "o" or as "oe" and still be clear to Germans. (talk) 15:56, 25 May 2010 (UTC) Martin.
Just removing the diacritics looks very odd. While most German words can still be deciphered without the diacritics, simply omitting them is not correct.
If you remove the diacritics in French, you will create alot of ambiguity and in some cases completely change the meaning.
If diacritics are not available, the proper solution is to transliterate the corresponding characters. For the German language, the transliteration rules are as follows:
ä -> ae
Ä -> Ae (or AE if the next letter is a capital letter as well)
ö -> oe
Ö -> Oe (or OE)
ü -> ue
Ü -> Ue (or UE)
ß -> ss
--Matthiaspaul (talk) 17:54, 28 April 2013 (UTC)


I'd love to know when seven-segment displays first appeared? Who made them? Who devised them? —Preceding unsigned comment added by JeffSmith79 (talkcontribs) 07:43, 12 July 2010 (UTC)


The current revision says, "Two basic conventions can be seen for Arabic numerals: one lights the additional segment in 6 (segment A), 7 (F) and 9 (D); the other, more anglophone one does not. Military, mission critical, and safety-of-life applications prefer the latter. The idea is to use a display font where a single burned out or missing segment in a digit will not display as a different valid digit."

So, we don't want to have 9 display with segment D, because then a dead segment E would fail to distinguish 8 and 9. Makes sense. Except that now a dead segment A will fail to distinguish 4 and 9. Am I missing something? Joule36e5 (talk) 07:58, 11 August 2010 (UTC)

Since nobody responded to this, I've boldly deleted the questionable text. I also reworded the remaining sentence to not specify whether the optional segment is being added or removed -- it's my experience that the most common representation has 6 with A, and 9 with D, but 7 without F. The section is pretty short now, is there anything else to be said, or clarified? Joule36e5 (talk) 10:16, 11 September 2010 (UTC)

16 seg display?[edit]

Does such a page exist for a 16 segment display? —Preceding unsigned comment added by Atomforyou (talkcontribs) 00:07, 20 October 2010 (UTC)

Apparently it does: Sixteen-segment display. Although I've never seen that before; the most similar thing I've seen is a Fourteen-segment display (which is basically the same but with the top and bottom horizontal bars non-broken). --Cousteau (talk) 09:47, 20 October 2014 (UTC)

Pictures too big[edit]

I think the pictures for each characater are too big; one can't see the glyph without leaning back and squinting a bit to blur it together. They're far bigger than the accompanying text. I'd have thought trying them 50% would be worthwhile to see if it's an improvement. -- Ralph Corderoy (talk) 20:05, 7 February 2011 (UTC)

Edit request on 11 May 2013[edit]

It's tables already. Don't it. A text is drawned: The tables below show alternative seven-segment display patterns for the Hindu-Arabic numerals, the 26 letters of the... And the modern examples now are supported:

0 11 2 3 4 5 66 77 8 99
0 1 2 3 4 5 6 7 8 9
Latin alphabet
A a/@ a @ b b B C c d d D E e F/f G g H h I I
A, a; @ B, b C, c D, d E, e F, f G, g H, h I, i
J J J j K K K K k L l l l M/m M/m M/m M/m N n N ñ O o P/p q Q
J, j K, k L, l M, m N, n Ñ, ñ O, o P, p Q, q
r r R S/s S ſ t t T T U u V v V v W/w W/w W/w W/w X X Y/y Y/y Y/y Y/y Z/z Z z
R, r S, s, ſ T, t U, u V, v W, w X, x Y, y Z, z
Greek alphabet
Α Β Β/β Γ δ δ Δ Ε/ε Ζ Η Θ/θ θ θ θ
Α, α Β, β Γ, γ Δ, δ Ε, ε Ζ, ζ Η, η Θ, θ
Ι Ι ι Κ Λ/λ λ Λ μ Μ Μ Μ Ν ν Ξ Ο ο Π Π π
Ι, ι Κ, κ Λ, λ Μ, μ Ν, ν Ξ, ξ Ο, ο Π, π
Ρ/ρ Σ/Ϲ/ϲ Σ ς σ τ Τ Υ/υ Υ υ Φ/φ Φ Χ/χ χ Ψ/ψ ψ Ω
Ρ, ρ Σ, σ, ς, Ϲ, ϲ Τ, τ Υ, υ Φ, φ Χ, χ Ψ, ψ Ω, ω

Just you can to make me a minor change for 1 example? for N to change cfg to beg, and 4-digit decoder set from beg to abcef to N I really want to make a very good edits and remove clean-downs and add clean-ups.

Piotr Grochowski (talk)

Piotr Grochowski (talk with me) 17:09, 11 May 2013 (UTC) Piotr Grochowski (talk) 17:52, 12 May 2013 (UTC)

Hi Piotr. Unfortunately, it is very difficult to understand what you are trying to achieve. However, you seem to be determined to contribute in the English Wikipedia rather than, for example, the Polish Wikipedia, where things would certainly be easier for you.
Despite the language barrier (which can be overcome), your contributions are welcome for as long as they do not constitute original research. So far, I tried to keep as much of your contributions in the article as possible, but I already told you several times now (in edit summaries and on your IP talk pages) that you will have to provide reliable references for your contributions on alternative display patterns. I have never seen any Cyrillic or Greek letters being presented on 7-segment displays nor have I seen any publications discussing them. I tried to find some sources for you myself, but I couldn't find anything which would support your Cyrillic and Greek alphabet stuff. Some of the other alternative patterns are dubious as well. As much as I assume your good faith, I must also assume that you made up most of this (probably with best intentions, but it doesn't matter). If so, we cannot accept this here as all information in Wikipedia must be verifiable.
Therefore, please prove me wrong and provide reliable sources for your contributions here as quickly as possible. If you do not, we will unfortunately soon have to delete the information again. Bringing by those missing references should be your top priority now. Please understand that this is not optional.
If you did not read them already, please read WP:VER, WP:RS, WP:OR now. Thanks for your cooperation. --Matthiaspaul (talk) 23:49, 12 May 2013 (UTC)
Seven-segment displays have rarely, if ever, been used for displaying arbitrary strings or even full texts, but there are several computer fonts that emulate the design of such devices. Greek letters mostly have appeared on calculators and meters, because some of them have conventional meaning in mathematics and physics, but likewise a full alphabetic set is rare, though tempting to create. Some pictures of actual devices would be great. Segmental Cyrillic may have been used in Eastern Europe, might even still, but we are lacking sources for that, too.
So the tables and examples are a wild mix of sourced, “sourcable”, unsourced and OR statements. It would be great to have a resource that collects and compares all variants that have been in ad-hoc or systematic use throughout the past few decades. However, Wikipedia should not be it. Therefore I have created a wiki at Wikia to do just that. If that may count as a reliable source someday, I don’t know, but the gathering process should be much easier there. — Christoph Päper 09:34, 14 May 2013 (UTC)
Yes, Christoph, I think it is a very good idea to move the "gathering process" to Wikia as Wikipedia really isn't the place for it (at least not in article space and without any sources).
Since Piotr unfortunately kept completely silent on the question of sources (although asked many times), I have now started to clean up the article. The example section has been trimmed down to some of the more illustrative examples, which are likely to exist in reality even though no sources were given for them so far. This mostly reflects the more or less stable 2012-08-30T22:41:52 revision before significant amounts of original research were inserted into the article by Piotr (still as IP then). I think a few more examples might be nice in this section, but only if they come with full sources. (I could contribute some seven-segment display messages found on Minolta SLR cameras, if this would be found useful.)
I haven't yet touched the "display pattern tables" section, which needs much cleanup. Any display patterns, for which we cannot find reliable references, should be removed IMO. (I have found RS for some Latin alphabet patterns, but by far not all. So far, I could not find a single reliable source for any Cyrillic or Greek letters on 7-segment displays. Does someone else have sources for them?)
--Matthiaspaul (talk) 00:01, 21 May 2013 (UTC)

Answer: This page is not released in polish. Try to remake to polish. Remember about translations (tables→tabelki) — Preceding unsigned comment added by Piotr Grochowski (talkcontribs) 14:14, 15 May 2013 (UTC)

Hi Piotr, you can certainly create a similar article in the Polish Wikipedia, but localized versions of guidelines like WP:VER, WP:RS, WP:OR exist in the Polish Wikipedia as well (the details may be different, but not the general ideas). So, you will have to provide sources in the Polish Wikipedia as well.
That having said, please remember that we will unfortunately have to delete many of your contributions to the English article if they remain unsourced for much longer. Were you able to find sources already? Please make bringing by those references your top priority now. If you know specific devices using certain display patterns, please provide their names (and ideally a photo showing the pattern), this may serve as a proof that the pattern is actually used in the real world and not your invention, as well. Thanks. --Matthiaspaul (talk) 10:00, 16 May 2013 (UTC)
Answer: I can't this. Piotr Grochowski (talk) 08:48, 21 May 2013 (UTC)
Hi Piotr, what do you mean by this?
a) You cannot provide reliable sources as per WP:RS?
  • Well, after several attempts to find sources for you myself, I have come to this conclusion already. Unfortunately, this means, that we will have to remove most of your original research (at least anything that does not seem to be obvious, plausible and highly likely to exist in reality in the first place).
b) You cannot create a similar article in the Polish Wikipedia?
  • Yes, you cannot do this at present, because your account in the Polish Wikipedia is currently blocked. If the block is over and you do not continue to act against the guidelines there, you will be able to create articles in the Polish Wikipedia. Of course, they must meet the criteria for notability, otherwise they will be deleted similar to your Russian display page (which had no contents) in the English Wikipedia. So, for as long as you cannot provide sources, there is not much point trying to create an article on 7-segment display patterns in the Polish Wikipedia. --Matthiaspaul (talk) 11:14, 21 May 2013 (UTC)

B. Because i can't translate this page to polish. — Preceding unsigned comment added by Piotr Grochowski (talkcontribs) 09:33, 4 June 2013 (UTC)