Abstract: A control circuit for a continuous conversion of information carrying anaous voltage and current signals into digital magnitudes containing said information, the respective digital magnitude is so coded that always one digital magnitude differs from the next higher digital magnitude merely by a one-digit digital information value. The circuit of the invention is characterized primarily in that for a simultaneous reception of the signals there are provided one or more serially arranged analogous digital converters as well as control stages comprising one or more groups, while the groups for folding the signals are formed by differential converters which emit the folded signals at the exit of the respective group and while an analogous digital converter follows the control stage or stages. The analogous digital converter forms informational values of the digital magnitudes by a subdivision of the signals.