Display-less computing

Paul Koning paulkoning at comcast.net
Mon Dec 14 20:05:08 CST 2015

> On Dec 14, 2015, at 2:46 PM, Mike <tulsamike3434 at gmail.com> wrote:
> ...
>> At
>> https://en.wikipedia.org/wiki/Punched_card#/media/File:Blue-punch-card-front-horiz.png
>> is a picture of a card.  It was punched with a printing punch, or run through a 029 series interpreter punch, NOT with an INTERPRETER, which didn't line up what it printed with the columns (too large a font to do so), and couldn't interpret and run COBOL anyway.
>> Notice the punches used for the numbers.
>> The rows above '0' were called 'Y' and 'X'

I've only ever seen them called "12" and "11" for the top and next rows respectively.  For example, the card code listing on the IBM 360 "green card" shows them that way (e.g., A is 12-1).  


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