Slot Card BBS
Custom Search
   


Re: Can Anyone Read Holed Key Cards?

There are seven vertical columns on these keypunch cards. Each "hole" represents a "1" and each space represents a ZERO. So string out the zeros and 1's on each line to read the card.

Messages In This Thread

Can Anyone Read Holed Key Cards?
Re: Can Anyone Read Holed Key Cards?

Copyright 2022 David Spragg