1. A PARALLEL TO SERIAL TRANSLATOR COMPRISING: (A) A SOURCE OF POTENTIAL, (B) A PLURALITY OF INPUT TERMINALS, (C) MEANS FOR ENERGIZING THE INPUT TERMINALS SELECTIVELY IN PAIRS, (D) A SET OF INPUT RELAYS, ONE FOR EACH OF THE INPUT TERMINALS AND RESPONSIVE TO THE SIGNALS APPLIED TO THE INPUT TERMINALS, (E) A TWO AND ONLY TWO INPUT SIGNAL CHECKING DEVICE CONTROLLED BY CONTACTS OF THE INPUT RELAYS, (F) AN INCREMENTALLY STEPPED PULSE EMITTER DEVICE, (G) MEANS FOR INCREMENTALLY ACTUATING SAID PULSE EMITTER DEVICE, (H) MEANS RESPONSIVE TO THE OPERATION OF THE SIGNAL CHECKING DEVICE FOR RENDERING THE INCREMENTAL ACTUATING MEANS ACTIVE, (I) AN OUTPUT TERMINAL, (J) AN ELECTRICALLY CONDUCTIVE PATH CONNECTING THE POTENTIAL SOURCE AND SAID OUTPUT TERMINAL AND OPERATIVELY CONTROLLED BY SAID PULSE EMITTER ACTUATING MEANS FOR CONTROLLABLY SUPPLYING OUTPUT PULSES TO THE OUTPUT TERMINAL, (K) AN OUTPUT CONTROL RESPONSIVE TO THE OPERATION OF SAID PULSE EMITTER DEVICE FOR INTERRUPTING THE SUPPLY OF OUTPUT PULSES TO THE OUTPUT TERMINAL AFTER A PREDETERMINED QUANTITY OF PULSES HAD BEEN FURNISHED TO THE OUTPUT TERMINAL, AND (L) A RESET CONTROL RESPONSIVE TO THE OPERATION OF THE OUTPUT CONTROL FOR RENDERING THE PULSE EMITTER ACTUATING MEANS OPERATIVE TO RESTORE THE PULSE EMITTER DEVICE TO ITS NORMAL POSITION.