Questions tagged [character-sets]

Questions about character-sets, either from a standardization point of view, or in terms of the repertoire implemented by particular equipment.

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4
votes
1answer
427 views

Why ASCII paper tape has lower bit punched from the narrow side?

ASCII was presented on paper tape where the lower 5 bits cross sprocket holes as following While FIELDATA chose the other way I found placing the higher, flag bits at the narrow side appealing, ...
7
votes
1answer
578 views

What was the intended use for the character symbols for control codes in codepage 437?

Is there a well documented or well understood explanation for what was the intended purpose for the more haphazard glyph choices in the control code range of the original IBM PC character set? Maybe a ...
4
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2answers
941 views

Were any decimal-based computers capable of handling text?

Many of the earliest computers stored and manipulated numbers in various decimal codings rather than in pure binary. Examples include the Mark I and ENIAC, as well as some UNIVAC and IBM models. ...
1
vote
3answers
165 views

What character repertoires were available on teletype typewheels?

Over in my question about input devices with character sets suited to Algol 60, I mentioned using an ASR-33 / KSR-33 teletype with the subscript-10 character ₁₀. I have subsequently been unable to ...
9
votes
2answers
840 views

Was there an input device capable of entering all Algol 60 symbols with correct appearance?

This question was inspired by recent discussion on early keyboards and character sets, and mention in passing about how the COBOL designers were concerned about not using "non-existent" ...
35
votes
4answers
9k views

Why do keyboards have an asterisk?

While we're all accustomed to using * as the multiplication symbol (not to mention other esoteric meanings in programming) it is of course not actually the everyday standard symbol for multiplication. ...
15
votes
3answers
2k views

C64/PETSCII block graphic symbol: was there ever a logical reason for their “ASCII” codes?

You know those block graphic symbols that allows you to draw lines, corners, intersections, fine bar charts, etc. they are useful and one can do a lot of stuff, but their code arrangements always ...
62
votes
4answers
22k views

Why is Windows using CR+LF and Unix just LF when Unix is the older system?

Windows and MS-DOS use the control characters CR+LF (carriage return, line feed) for new lines, while Unix uses just LF. As far as I know CR+LF made sense for systems controlling a real teletypewriter,...