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Comment by jshprentz | Hacker News Reader
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jshprentz
·
Drum cards
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betaby
·
Like this
https://www.themusicstand.com/Drum-Rudiments-Playing-Cards-p...
?
jshprentz
·
No. Like this:
https://en.wikipedia.org/wiki/Keypunch#Program_card
analog31
·
Man, I'm dating myself by admitting that I know what a drum card is.
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