Which paper tape hole is bit 1?

Paul Koning pkoning at equallogic.com
Sat Nov 19 08:58:17 CST 2005

>>>>> "Barry" == Barry Watzman <Watzman at neo.rr.com> writes:

 Barry> However, one question, this chart shows the high-order bit
 Barry> (parity bit) punched for every character, no exceptions.  Was
 Barry> that a standard convention in sending ascii files to paper
 Barry> tape?

You mean the high order bit was always on -- as opposed to being a
parity bit?  That's unusual.  Parity is a bit more common, but I don't
think there was a single standard.  Classic ASCII is a 7-bit code,
leaving the 8th bit for people to mess with as they saw fit.


More information about the cctalk mailing list