What are the 94 printable characters from the 128 characters of ASCII table?

[Gregory Woodbury]

On Mon, Jul 25, 2011 at 12:52 AM, yudi v <yudi.tux at gmail.com> wrote:

> No it's not my homework, just curious.
>
> I looked at that link before posting.
>
> what confused me was the DEL key code. Usually the first 32 characters are
> control characters but the wiki article clubs DEL with the control
> characters where as it's assigned the last code in the table. That's after
> the printable characters.
> That's why I posted here to get a confirmation.
>

It's history. The DEL code was all holes punched in paper tape (8-level)
that was used to RUBOUT a character in error.
Teletype and papertape systems were programmed to ignore the 0xFF code.
When ASCII was formalized, the code for DEL
was firmly in use as a control character and papertape was still in use.
The various other "control" codes were used for various
esoteric paper tape storage methodologies and later for 8-bit wide magnetic
tape systems.

Thanks for the nostalgia trip.

-- 
G.Wolfe Woodbury
redwolfe at gmail (dot) com
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