Simple past tense and past participle of keypunch.(verb)
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Use "keypunched" in a sentence
"All of the data on extant birth certificates were keypunched into an electronic database."
"Although they love getting anything they are hoping to find:a hand-written catalog card in "library hand"artifacts of homemade or local early computer systems for cards and orders, e.g. keypunched cards, etc.the ever-elusive Polaroid camera with attachment for taking pictures from the NUClocal manuals for typing cards, filing, etc."
"Unfortunately, very little coordination among maritime countries existed during that time, resulting in each data set being keypunched in an entirely different format, and with different coding practices."