1. A SWITCHING DEVICE COMPRISING A FIRST PAIR OF SPACEDAPART SUBSTANTIALLY PARALLEL PLATES OF MAGNETIC MATERIAL EACH HAVING A PLURALITY OF APERTURES THEREIN, FIRST FLUX GENERATING MEANS POSITIONED BETWEEN SAID PLATES NEAR ONE END THEREOF TO ESTABLISH A MAGNETIC FIELD IN THE PLATES OF OPPOSITE POLARITY, FIRST MAGNETICALLY OPERABLE SWITCH MEANS POSITIONED IN FLUX LINKING RELATIONSHIP WITH THE OTHER END OF SAID PLATES, A PLURALITY OF SECOND MAGNETICALLY OPERABLE SWITCH MEANS POSITIONED ADJACENT RESPECTIVE ONES OF SAID APERTURES, AND A PLURALITY OF SELECTIVELY OPERABLE SECOND FLUX GENERATING MEANS MOVABLE INTO AND OUT OF THE CONFINES OF THE ASSOCIATED APERTURES TO VARY THE SAID MAGNETIC FIELD THEREBY OPERATING AND RESTORING THE SAID FIRST SWITCH MEANS AND SIMULTANEOUSLY MOVABLE INTO AND OUT OF FLUX-LINKING RELATIONSHIP WITH THE ASSOCIATED SECOND SWITCH MEANS THEREBY OPERATING AND RESTORING THEM CONCURRENTLY WITH THE OPERATION AND RESTORATION OF THE SAID FIRST SWITCH MEANS.