I remember getting an extended 80-strand card to double the memory to 128 Knots.
Don't you tell me about 80x25 cards, young man! This is the proof of evolution: http://en.wikipedia.org/wiki/Jacquard_loom, http://en.wikipedia.org/wiki/Punched_card, text display*, http://en.wikipedia.org/wiki/Punched_tape, which was good enough to operate the machines I ran as late as 1992... Wait, you're talking about that upstart home business? Bah, humbug. At any rate, apart from duck and cover, do not fold, spindle or mutilate were the watchwords of the day!
From our friends at Wikipedia:
*"A legacy of the 80 column punched card format is that most character-based terminals display 80 http://en.wikipedia.org/wiki/Characters_per_line. As of November 2011 some character interface defaults, such as the command prompt window's width in Microsoft Windows, remain set at 80 columns and some file formats, such as http://en.wikipedia.org/wiki/FITS, still use 80-character http://en.wikipedia.org/wiki/Card_image."
Less than two decades ago I was sending payment to my insurance company which still used the IBM punchcard. True story. What's depressing about that? I'm living in the future. Sigh.
What's really sad is that I used to be able to read the data on a punch tape, 8 bits a line, lol.