8-bit ASCII

[Macnerd]

Is 8-bit ASCII universal now?

I'd love to create a conlang. I came up with the idea to use exclusive-or to create an alphabet for my conlang. I know that ASCII used to be 7-bit. I wonder if ALL printers & ALL word processors now use 8-bit ASCII. I know that some of the bits are for non-printable things like carriage return. It would be fairly easy to create a computer program that uses a random number generator to create printable characters using exclusive-or. And also use exclusive-or to decode.

Is my assumption correct that all printers & all word processors use 8-bit ASCII?

 

[Macnerd]

Is someone going to answer my post?

After I sent the post, it occurred to me that maybe nowdays all printers & word processors use Unicode instead of ASCII. Maybe ASCII was used way back when computers (including mainframes) & printers first came out.