Reading some of the questions here got me to thinking... how many of the old methods, software or hardware, are still with us today?
My two examples:
HTML. It's line oriented, for crying out loud. Do you know how much development effort is wasted working around that limitation, rather than address any part of the screen at any time? Dates back to line oriented text displays that the original hypertext of the 1970's was designed to run on.
And, a lot of new desktop PC's still have at least one ISA or ISA compatible slot on the motherboard.