Which paper tape hole is bit 1? - test-drb@ccmp.vtda.org

19 Nov 2005

On Nov 19 2005,  9:50, Barry Watzman wrote:
...
  I have a chart of paper tape hole patterns for all 128
characters, and it
...
  shows the LSB (bit zero, although the chart numbers
them 1-8) as the edge
...
  hole on the 3-hole side, with the bits in order 0 to 7
(or 1 to 8).

 However, one question, this chart shows the high-order bit (parity bit)
...
  punched for every character, no exceptions.  Was that
a standard convention
...
  in sending ascii files to paper tape? 
It was for DEC, at least with PDP-8s.  I don't know about anyone else.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York