Edge punched cards

Tony Duell ard at p850ug1.demon.co.uk
Fri Mar 6 15:06:33 CST 2009

Thining of edge-punched cards...

The original membership cards for the Cambridge University Computer 
Preservation Society had 8-level paper-tape punchings along the bottom 
edge giving (IIRC) 'CUCPS' (im ASCII),. the member's computer userid 
(ditto) and the membership number (3 bytes, binary).

I don;t think anyone ever tried to machine-read them though.


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