Object is a large metal cabinet with eight hinged doors on each of the long sides. The narrow front end has the control panel. At the top is a panel bearing the legend "PDP-1" and a number of small white pilot lights related to I/O devices. Below this is a blank panel to which has been attached a plastic holder for eight paper tapes. Below this is a paper tape reader. Below that, at waist height, is the actual contr anol panel with numerous pilot lights related to CPU operations, two banks of small toggle switches for entering data and addresses, and a row of six large toggles with fancy spindle-shaped handles.for execution control: START, STOP, CONTINUE, DEPOSIT, EXAMINE, and READ IN.