Certainly, screen dimensions were modelled after punched cards: There
were 80 columns on a punched card, and once everybody was used to that
line length, it was an obvious choice to make the screen just as wide -
except for a couple of clever guys who made the screen 64 columns wide,
which happens to be a power of two.
I've seen 132 column screens too (why 132???) but did anyone ever try to
make a 128 column screen (or printer)? It would seem to be a logical size
to make it, but I've never seen one.
I'm fairly sure its because of wide printing terminals, using landscape
paper orientation instead of portrait. And the limitations of the
existing printheads.
At least thats my theory and i'm sticking with it.
-Lawrence LeMay