We should be sure to distinguish "paper vs. digital" (the question of storage technology, I suppose?) and "tablet(paper)/pen(pen) vs. touchscreen/finger vs. key

We should be sure to distinguish "paper vs. digital" (the question of storage technology, I suppose?) and "tablet(paper)/pen(pen) vs. touchscreen/finger vs. keyboard/mouse" (the kind of interface). Typewriters are paper tech. Drawing tablets are digital. Large physical keyboards can be used with paper (typewriters) or digital (computers). How different from a piece of paper and a pen is a digital tablet device with a blank canvas that you draw on with a stylus? In what ways? Just some thoughts.