What did computers without screens do?

[Chuck Guzis]

The subject brought up the thought of how many display-less computers we 
encounter every day without giving it a thought.  I think that probably 
100 would be a safe bet.

Looking over past this screen, I see my network hub, mouse, keyboard and 
heaven knows how many display-less computers inside the actual shell of 
my PC.

I can't honestly say how many computers my car uses.

Probably 100 is much too low.

--Chuck