> From: Al Kossow <aek at bitsavers.org> > > On 10/25/10 7:26 PM, leaknoil wrote: >> It looks to me like a punch card exactly fits in there and the contacts are what read the holes in the card. > > nope > > cards are read with 12 brushes Or 80 brushes, I think the holes in cards were made tall and narrow to make reading them that way easier.