Abstract: An electrochemical counting device in a casing, which contains counters that may be switched by a drive. The drive is connected to a switch armature, which engages a stepping wheel to shift the counters. The drive is also provided with two swivel arms, which are not mechanically connected. Each swivel arm is equipped with a spool. In order to shift the counters, both swivel arms are pivotable oppositely directed in a synchronized manner, perpendicular to the pole face of the permanent magnet. The permanent magnet is arranged between the two swivel arms. Both swivel arms are supported at the casing by a spring. The swivel arms cannot be pivoted accidentally towards each other due to impact and therefore cannot accidentally shift the counters. The electromechanical counting device may therefore be employed, where sudden impact or magnetic interference may occur.

Abstract: An n-position selector switch includes a binary counter which is clocked in response to a user actuated push-button type input. The counter's output is fed into a decoder, the output of which drives a visual display indicating the selected switch position. A detector at the counter output responds to a data pattern indicative of selection of the nth-switch position by initiating a counter load operation which resets the counter on the occurrence of the next pushbutton actuation.

Abstract: A rotary-type switch simulator includes a shift register and a counter, both clocked by a momentary contact switch. The shift register outputs drive visual indicators indicating the selected switch position, while the counter provides a binary output corresponding to the indicated switch position. Logic circuitry, responsive to selected data bits at the outputs of the shift register and counter, reset the shift register and counter respectively to their initial states after the highest switch position has been accessed.