IBM 029 Card Punch and ASCII Machines

Paul Koning paulkoning at
Tue May 12 12:51:07 CDT 2015

> On May 12, 2015, at 12:01 PM, Dave G4UGM <dave.g4ugm at> wrote:
>> ...
> This site lists it as an M7824 card...

Found that module number in a copy of the Option-Modules List.  It shows that it’s a CSS item.  That would explain why few have ever heard of it.  I wonder what punch it used.  I’ve seen people use CDC punches (415) as OEM devices.  JWS mentioned someone interfacing a machine to a keypunch.  That’s a bit of a desperation tactic, it would be extremely slow.


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