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Claim 1

A SIGNAL TRANSLATING AND MANIFESTING DEVICE COMPRISING: A FIRST MEMBER CONTAINING A CHAMBER; A SECOND MEMBER CLOSELY FITTING WITHIN SAID CHAMBER, SLIDABLE THEREWITHIN PARALLEL TO AN AXIS, AND DEFINING THEREWITH A VARIABLE VOLUME COMPARTMENT IN WHICH MAY BE MAINTAINED PRESSURES DIFFERENT FROM THAT WITHOUT SAID FIRST MEMBER; A SET OF PORTS PASSING THROUGH SAID FIRST MEMBER, NONE OF SAID PORTS LYING ON THE SAME LINE PARALLEL TO SAID AXIS WITH ANY OTHER OF SAID PORTS; A PLURALITY OF GROUPS OF PORTS PASSING THROUGH THE CLOSELY FITTING SURFACE OF SAID SECOND MEMBER AND COMMUNICATING WITH SAID COMPARTMENT, EACH OF SAID GROUPS HAVING EACH OF ITS PORTS IN REGISTRATION WITH ONE OF THE PORTS OF SAID SET WHEN SAID SECOND MEMBER IS LOCATED AT A PREDETERMINED POSITION WITHIN SAID FIRST MEMBER; MEANS FOR URGING SAID SECOND MEMBER TOWARD A PARTICULAR POSITION WITHIN SAID FIRST MEMBER; MEANS FOR SUCCESSIVELY APPLYING SIGNALS CONSISTING OF PERMUTATIONS OF PRESSURES TO THE PORTS OF SAID SET, WHEREBY SAID SECOND MEMBER IS SUCCESSIVELY MOVED TO POSITIONS CORRESPONDING TO SAID SIGNALS; CARRIER MEANS CONSTRAINED TO MOVE WITH SAID SECOND MEMBER AND CARRYING SYMBOL MEANS CORRESPONDING TO SAID SIGNALS; AND MANIFESTING MEANS ASSOCIATED WITH SAID CARRIER MEANS FOR SUCCESSIVELY MANIFESTING THE SYMBOLS CORRESPONDING TO THE SIGNALS SUCCESSIVELY APPLIED TO SAID SET OF PORTS.