| 摘要 |
A control system for remotely controlling a plurality of operation devices, permitting selective individual actuation of those operating devices. A slide projector has its lens system replaced by a plurality of light-sensitive semiconductor devices. Each step of the control "program" comprises a card of a size to fit within the slide holder of the control projector and having openings corresponding to the light-sensitive semiconductor devices associated with those operating devices which are to be actuated at that step. Thus, those operating devices which are to be actuated for a particular program step have their associated light sensitive semiconductors illuminated while the program card for that program step is within the projection position of the control projector. The operating devices, by way of example, might be slide projectors, providing a composite visual display which can have portions of the display changed individually.
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