At about 1h10 into the movie, HAL 9000 just predicted the 100% failure of the AE-35 unit within the next 72 hours. To discuss this with Frank Poole, Dave Bowman asks HAL to provide a hard copy - and we see this punch card emerging on the left side. Printing the second image on 4" x 6", gives you the punch card in the correct size of 3" x 5".
Find more details at: https://markus-wobisch.blogspot.com/2021/09/a-replica-of-hal-9000-punch-card.html
