&quot;Clark next led hardware design for the TX-2 with a focus on graphical interactivity. MIT doctoral student Ivan Sutherland realized that Clark&#x27;s system enabled human-computer interaction concepts dreamed of 20 years prior by another MIT-trained engineering legend, Vannevar Bush. Sutherland used TX-2&#x27;s light pen and screen to develop a graphical design application called Sketchpad.&quot;<p>Both the genesis of the GUI and object-oriented programming took place right there.