Abstract: A heat radiator assembly conducts the heat generated by electronic parts mounted on a printed board, such as integrated circuits, resistors, and semiconductor elements, through first and second heat sinks to a shield case, so that the heat is radiated therefrom and thus natural air cooling is effected. The first heat sink is provided on the shield case, and the second heat sink is passed through a through hole in the shield case and the first heat sink and is threadedly engaged with the first heat sink, to engage the electronic parts. If necessary, a lock nut or a lock screw may be used for fixing the threaded engagement of the second heat sink.

Abstract: A data display system for displaying selectively on a data display computational data from a central processing unit (CPU) and data stored in a memory representing setting values used as criteria for the result of computation by the CPU. Setting values to be displayed are set on an operation device and, after being processed by the CPU, are sent to the memory. The stored data of setting values are selected by a selection switch and sent through a multiplexer to a data display device. A display selection switch means operates on gate means and the multiplexer to supply a numeric code set on the operation device corresponding to computational data to be displayed to the CPU through the gate means, so that computational data from the CPU is sent through the multiplexer to the data display device.