On Fri, 12 Dec 2008 20:34:37 -0500, Tom Francis - SWSports
wrote:

Heck, I go back even further. Our high school math club used to
program Sylvania's mainframe (this was '62) using phone jacks/plugs on
racks six feet tall and four wide - there were fifteen of them.

With vacuum tubes no less. :)

I get a warm feeling just thinking about it, nothing like the soft red
glow from a rack full of vacuum tube equipment on a cold winter's
night. :-)