Following on from our previous post, here are some examples of computer drawings from 1969 that Frederick Hammersley was able to produce by using these punch cards.
Hammersley recounted this process in an article he wrote for the scholarly arts and science journal Leonardo titled, “My First Experience with Computer Drawings.” Here’s a short excerpt:
I was shown how to prepare a computer program and how to transfer it to an IBM punch card by machine. The alphanumeric characters we could “draw” with were: the alphabet, ten numerals and eleven symbols, such as periods, slashes etc. […] The intricacies and possibilites seem endless and I have spent a great deal of time trying to master the mechanics of this particular technique.
-Frederick Hammersley, 1969