On Tue, May 23, 2000 at 05:54:50PM -0400, Terwilliger Chris-A229AA wrote:
>
> A space = logical 0 = positive voltage between +3 and +12V on RS-232/V.24
> A mark = logical 1 = negative voltage between -3 and -12V on RS-232/V.24
>
> A normal async character starts with:
>
> a start bit (space)
> 7 or 8 data bits (marks or spaces)
Ah! Now I get the name of the company that makes Online & other
serial comm software, Mark/Space Softworks. I always assumed it was
named after some guy named Mark... :)
John
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