AutoCAD was released in 1982 and by 1994 as many as 750 training centers had been using it worldwide. Before, drafting required pencils, erasers, t-squares, and much more time. And the photos below really show it. Looking at them, you can almost hear the rustling paper. Now, architectural, electrical and other drafters are mainly clicking their mouse and keyboard.
AutoCAD and all that softwares are just tools which save us the time and give some more accurate designs. However initial designs are still done on paper which later converted to CAD design for better understanding!