1,070,222. Time-recording apparatus. N.G.E. STEMME. July 14, 1965 [July 17, 1964], No. 29915/65. Heading G4T. A time-recorder, e.g. for workmen in factories, comprises a matrix RM of two-state memory elements, at least one manually operated switch OM1 for each person using the time-recorder, said switch connecting one of a plurality of conductors to a set pulse source S1 to set at least one of the memory elements K to one of its two states, the switch operating such that the time of the connection through said switch when operated is greater than the interval T2 between any two successive pulses from the set pulse source; means for scanning the matrix to reset to the other state any element which has been set to the said one state and for generating a read signal when an element is re-set. As shown, when a toggle switch OM1 is operated a conductor is momentarily connected with a set pulse source S1 for setting a memory element K. A scanning device S2, BRS, BRR, AKS and AKR co-operates with the matrix for repeatedly reading and resetting the memory elements, a read-out signal being generated by each set memory element. A recording device D which feeds paper tape past a tape punch H receives and records said read-out signals.
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