@Full_marx Librarian in me says...
A nicer photo, showing a used card and details.
We can see the card's instruction, I highlighted in green :
Z(1) = Y + W(1)
In English, it takes a lot more wording to transmit the instruction, but I believe it would read as: "Let array Z, cell 1 be equal to variable Y plus contents of array W, cell 1"
...where Z and W were previously defined and initialized as single dimensional (think a straight line of mailboxes, each cell contains some value you chose to store there) arrays.
It's been a long time, Fortran. 😉
@design_RG @Full_marx@qoto.org I do recall punching holes in cards like that 🙂
Yes, it was funny but how glad I was when we did not need to anymore
Thank you, Ed! I will add the video you linked to my ever growing Tabs list, to be processed.
I found a nice image showing how each of the possible characters was encoded into a card, it's here: http://www.columbia.edu/cu/computinghistory/026-card.jpg
Some characters are one single punch hole (each character occupies one vertical column, out of the 80 possible in the card), some use two punch holes, which combined represent the character.
I was looking at images and found a nice one of the IBM Model 29 card punch, which is the one I personally worked with to create my first programmes in first year Uni classes. It was a solid, well built, last forever machine.
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