26 Feb
2009
26 Feb
'09
3:01 p.m.
On 26 Feb 2009 at 17:50, Paul Koning wrote:
Yes, they are, if you use the full binary code. That
exists but it
isn't often seen. I do remember some IBM 360 binary card decks,
though.
You could even do 12 bits per column if the card punch being used is
forgiving.
The CDC opersting sytems (NOS, SCOPE, KRONOS, etc.) used to punch
"banner" cards in column binary so I/O clerks could pair up decks
with other job output.
But a card with all columns punched is like a wet noodle. Very
flimsy--good for jamming card readers.
Cheers,
Chuck