CASIO-Calculator-Font

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by TH3_C0N-MAN
See also Casio fx-9860GII by Typo2.

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BASED ON THE CASIO fx-9750GII MODEL.

CONTAINS EVERY CHARACTER AVAILABLE ON THE CASIO fx-9750GII, EXCEPT FOR A FEW SYMBOLS THAT I COULDN'T FIND THE CORRESPONDING UNICODE CHARACTER FOR.

GO TO https://www.youtube.com/watch?v=3vtTHWoddgk

TO SEE MY SPACEZAP TRAILER THAT I MADE WITH THIS FONT!

CLICK ON THE LINK IN THE DESCRIPTION TO DOWNLOAD THE GAME FOR DESKTOP.

CHANGELOG

• 2017:12:29 — FIRST RELEASE WITH FOUR HUNDRED AND FIFTY-EIGHT CHARACTERS.

• 2018:01:06 — ADDED TEN CHARACTERS WITH THE HELP OF dpla AND TCWhite BRINGING THE TOTAL AMOUNT OF CHARACTERS TO FOUR HUNDRED AND SIXTY-EIGHT.

• 2018:01:08 — CHANGED THE “○” CHARACTER FROM 25E6 TO 25CB.

Info: Created on 29th December 2017 . Last edited on 7th January 2018.
License Creative Commons
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39 Comments

@TH3_C0N-MAN - Very nice.  Which model was this based on?

Comment by Goatmeal 29th December 2017

I'm also curious

Comment by ArrowUP 29th December 2017

I based this off the character chart for my CASIO FX-9750GII, but I think this is the font used for most CASIO dot-matrix displays.

Comment by TH3_C0N-MAN 30th December 2017

I just checked my CASIO FX-82AU PLUS II, and it seems to use the same font but with a limited selection of characters.

Comment by TH3_C0N-MAN 30th December 2017

Great! (too large for 'my' max 4x5 project, but cool/useful!)

May I suggest you to post a photo depicting the missing UNICODE characters? (I/we might retrieve their codepoint, visually… if it's not something too fanciful or proprietary, of course.)

Comment by dpla 5th January 2018

Here are some of the characters on the calculator that I can't find the corresponding unicode character for:

FOUND - Added to 2139

Comment by TH3_C0N-MAN 5th January 2018

FOUND - Added to 212F

Comment by TH3_C0N-MAN 5th January 2018

Superscript "-1"

Comment by TH3_C0N-MAN 5th January 2018

Subscript "-1"

Comment by TH3_C0N-MAN 5th January 2018
Comment by TH3_C0N-MAN 5th January 2018
Comment by TH3_C0N-MAN 5th January 2018
Comment by TH3_C0N-MAN 5th January 2018
Comment by TH3_C0N-MAN 5th January 2018
Comment by TH3_C0N-MAN 5th January 2018
Comment by TH3_C0N-MAN 5th January 2018

FOUND - Added to 2205

Comment by TH3_C0N-MAN 5th January 2018

FOUND - Added to 21D4

Comment by TH3_C0N-MAN 5th January 2018

FOUND - Added to 221D

Comment by TH3_C0N-MAN 5th January 2018

FOUND - Added to 23E8

Comment by TH3_C0N-MAN 5th January 2018

This is the fraction symbol.

Comment by TH3_C0N-MAN 5th January 2018

FOUND - Added to 00AA

Comment by TH3_C0N-MAN 5th January 2018

FOUND - Added to 2217

Comment by TH3_C0N-MAN 5th January 2018

Here's a screenshot of the calculator game I'm making with this font. More screenshots to come as I progress with the game.

Comment by TH3_C0N-MAN 5th January 2018

Thanks! I'm currenly on this list… Anyone can help!

Comment by dpla 5th January 2018

Well, it took me a while…
(Hope it can help a little.)

[Update your list if it did.]

Bye!

---

ℹ (PNG) {almost sure} [U+2139] 'INFORMATION SOURCE' (standard/serifed)

ℯ (PNG) {unsure} [U+212F] 'SCRIPT SMALL E' (loop lacking 'délié')
℮ {quite unsure} [U+212E] 'ESTIMATED SYMBOL' (erroneously italicized)
ℓ {very unsure} [U+2113] 'SCRIPT SMALL L' (too wide)

⁻¹ (PNG) ⚠ proprietary & NOT Unicode {2 chrs. – both already exist} [U+207B] 'SUPERSCRIPT MINUS' (common)
  + [U+00B9] 'SUPERSCRIPT ONE' (standard/sans)
₋₁ (PNG) ⚠ proprietary & NOT Unicode {2 chrs. – both already exist} [U+208B] 'SUBSCRIPT MINUS' (common)
  + [U+2081] 'SUBSCRIPT ONE' (standard/sans)
{There might be a few fanciful solutions as single-glyph pairs, e.g. in the mathematical or arrows ranges of Unicode(?)}

  (PNG) {superscript multiplication sign? superscript asterisk?}

ₓ (PNG) {almost sure – is the bar a command?} [U+2093] 'LATIN SUBSCRIPT SMALL LETTER X' (disambiguated/line above)
  (PNG) ⚠ proprietary & NOT Unicode {still not} '[MISSING] LATIN SUBSCRIPT SMALL LETTER Y' (disambiguated/line above)
{⊼⊽ [U+22BC] and [U+22BD] is one of several possible pairs with fanciful shapes and mapping}

ẍ (PNG) {fanciful} [U+1E8D] 'LATIN SMALL LETTER X WITH DIAERESIS' (circumflex expected!)
ŷ (PNG) {unsure} [U+0177] 'LATIN SMALL LETTER Y WITH CIRCUMFLEX' (standard)
ṕ (PNG) {fanciful} [U+1E55] 'LATIN SMALL LETTER P WITH ACUTE' (circumflex expected!)
{ⓧⓨⓟ [U+24E7], [U+24E8] and [U+24DF] might be used too, if you can afford the extra enclosed style without circumflex – is this sign a command?}

∅ (PNG) {almost sure – not the existing Ø (even ø)} [U+2205] 'EMPTY SET' (standard)

≎≖≬≭⋆⋇ {quite unsure} (PNG)

α (PNG) {was pretty sure too…} [U+03B1] 'GREEK SMALL LETTER ALPHA'
∝ {unsure} [U+221D] 'PROPORTIONAL TO' (narrowed loop)
  {quite unsure} [U+0018] 'CANCEL' <control> (wider second C, "CAN" recommended)
∞ {very unsure – it already exists} [U+221E] 'INFINITY' (cropped right end)
© {very unsure – it already exists} [U+00A9] 'COPYRIGHT SIGN' (cropped right end, too)

⏨ (PNG) {sure} [U+23E8] 'DECIMAL EXPONENT SYMBOL' (standard)

┘ (PNG) {quite unsure – I don't know your “fraction symbol”} [U+2518] 'BOX DRAWINGS LIGHT UP AND LEFT' (incorrectly subscripted)

ª (PNG) {sure} [U+00AA] 'FEMININE ORDINAL INDICATOR' (disambiguated/old/line below)

º (PNG) {sure} [U+00BA] 'MASCULINE ORDINAL INDICATOR' (disambiguated/old/line below)

  (PNG) {small multiplication sign? small asterisk? subscript asterisk?}
⁎ {likely} [U+204E] 'LOW ASTERISK' (standard in the middle)
※ {unlikely – it already exists} [U+203B] 'REFERENCE MARK' (incorrect without dots)

⇃↾ (PNG) ⚠ fanciful {2 chrs.} & NOT Unicode [U+21C3] + [U+21BE] HARPOONS WITH BARBS (overlapped/fused)
§ {very unsure – it already exists} [U+00A7] 'SECTION SIGN' (stylized without central 'loop')
∫ {unlikely – it already exists} [U+222B] 'INTEGRAL' (incorrectly straight ends)

You may need to contact Casio directly (or a dedicated forum of specific users)…

---

Interesting retro game :-) (Key 4 = fr€€mium?-))

Comment by dpla 5th January 2018

The "fraction symbol" may very well be 231F, bottom right corner—it's part of four brackets. The 12th symbol is most likely the currency sign, or 00A4. The small multiplication sign may be cross product, or 2A2F. Both Y's already exist: 0177 (circumflex), and 0233 (macron).

Comment by TCWhite 5th January 2018

P.S.: The last character may be 294C, which is "up barb right down barb left harpoon."

Comment by TCWhite 5th January 2018

I noticed you already have the currency sign, so, the only other character that looks similar to the image is 21D4, or "left right double arrow".

Comment by TCWhite 5th January 2018

Wow, thanks for going into so much detail dpla! I added the ℹ, ℯ, ∅, ∝, ⏨ (subscript 10), ª, and º characters. The fraction symbol is what old scientific calculators used to have before CASIO brought out the "natural text-book" display, where the calculator actually can display fractions. So ½ would display as 1⌟2. It basically just means "divide." I put the centred "x" character into 2055 ("⁕").

Thanks for your hard work!

Comment by TH3_C0N-MAN 6th January 2018

Thank you TCWhite for your suggestions. I added 21D4 and 294C. I'm not sure about the fraction symbol, because it wouldn't be under the brackets category. I'm debating whether or not to add the y's with accents, because since this font is from a calculator, they should probably be listed as some sort of mathematical symbols rather than actual letters.

Comment by TH3_C0N-MAN 6th January 2018

@TCWhite: Well done! (esp. 21D4/231F/294C – my local fonts are just incomplete, although I should have spotted the double arrow… :-))


@TH3_C0N-MAN: Now I quite understand the role of this fraction symbol that I must have forgotten (I never was into calculators, unlike 8-/16-/32-bit 'puters/code). Since your Casio models show legacy representations (i.e. old -and often big- ones, for the compatibility I assume), then there may be a few glyphs that were 'borderline' in the past (that is, not even pre-Unicode)… In these cases, you might end up to a conventional/fallback mapping (found on the web from your communities), even to a personal one (any free, even fanciful code point with some logic – only the shape would matter here, of course). Feel free to bump your page in our Live thread; this font looks already quite complete to my novice eyes. (Oh, b.t.w. I add it to my long list of low-res FS favorites, since it adds several US-ASCII 3x5 characters.)

Comment by dpla 6th January 2018

@dpla thanks for adding it to your favourites, I see my 1000+ character "PIXEL-STRIKETHROUGH" is in there as well!

edit: I just changed the centred "x" character to 2217.

Comment by TH3_C0N-MAN 6th January 2018

Yes (still only a few dozens to be archived/reviewed/commented, and I'm done with FontStruct's related very low-res fonts/trials [for the only sake of my comparisons, since ca. 2013 at least]). I'll post some minimalist isometric voxel art soon (but not their fontstruction, I'm afraid).


All right, I was going to be offtopic! → Continued here… :-)

Comment by dpla 6th January 2018

Yeah, the fraction symbol may be specific to the calculator. However, bottom right corner isn't techinically a bracket—it's part of the math symbols section, along with the ceiling glyphs. Also, 21D4 could be "between," which is 226C.

Comment by TCWhite 7th January 2018

Actually, with a bit more research (perusing my font Dehuti, which has all the math symbols), I think 21D4 is actually 2AA4, or greater-than overlapping less-than.

Comment by TCWhite 7th January 2018

@TCWhite thanks for your help. I've added the character to 2AA4. I think that the ambiguous nature of pixel fonts means that the character could be a whole lot of things!

Comment by TH3_C0N-MAN 7th January 2018

Go to https://www.youtube.com/watch?v=3vtTHWoddgk

to see my SPACEZAP trailer that I made with this font!

Download the game by accessing the link in the description.

Comment by TH3_C0N-MAN 8th January 2018

Nice game! (I'd love to see more frames per second like this famous one…) Your font fits perfectly :-)

Comment by dpla 10th January 2018

@dpla Thanks, I originally made SPACEZAP for my calculator, and I wanted to make this version as close as possible to the original. My calculator could only handle about 5fps for the moderately complicated program, so that's what I went with.

Comment by TH3_C0N-MAN 10th January 2018

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