Abstract: Memory device including an input circuit adapted to provide signal pulses to be applied to an IC counter so that they are counted by the counter. Auxiliary power source is provided to supply the power circuit in the counter to maintain the memory therein despite interruption of power supply. A set-and-reset type flip-flop circuit is provided between the input circuit and the counter in such a manner that the signal pulses are applied directly to one of the set and reset terminals and through an inverter to the other of the terminals. The arrangement is effective to prevent counting error which may be experienced during interruption of power supply.

Abstract: Money counting machine comprising a switch which produces signal pulses corresponding to the counted number of coins, a plural-digit counter which receives said signal pulses from the switch and produces bit signals corresponding to digits representing the counted coins together with sequentially produced clock pulses corresponding to particular digits, NAND gates connected with the counter allow an output to pass therethrough and through a selector switch when the selected number of coins are counted, said output being used to effect state change of a flip-flop circuit for terminating the money counting operation.