3. Apparatus as in claim 2 wherein each of said gate selector units includes three input terminals and each of said shift registers includes a common shift pulse lead connected to said control means, said control means generating shift pulse signals for shifting said coded identification signals stored in said shift registers, said first input terminal of each said gate selector unit being connected to the output of its associated first converter means, said second input terminal of each said gate selector unit being connected to a common control lead of said control means, and said third input terminal of each of said gate selector units being connected to the output of its associated shift register, said control means actuating each of said gate selector units via said common control lead to enable successive coded signals from said second input and output means to be transferred into said shift registers, said non-storage mode of said data storage means being established by the absence of signals on said common control lead preventing coded signals from being stored in said shift registers from said second input and output means, and initiating recirculation of said stored data within said shift registers and simultaneously enabling transfer of said stored signals from said shift registers to said second record forming means.
4. Apparatus as in claim 3 wherein said control means includes a counter for counting the number of shift pulses and generating a signal when the number of pulses counted corresponds to the number of bits in said shift registers, said signal terminating storage of said coded signals in said shift registers, said control means further including selector means settable to a desired number of new sets of coded signals stored in said shift registers.