The Mark 1 Perceptron, being adjusted by Charles Wightman (Mark I Perceptron project engineer).[3] Sensory units at left, association units in center, and control panel and response units at far right. The sensory-to-association plugboard is behind the closed panel to the right of the operator. The letter "C" on the front panel is a display of the current state of the sensory input.[4] The percept
