Abstract: A digital device for monitoring objects whose states are characterized by two-positioned signals, e.g., yes-no, on-off, etc., allows necessary instructions to be formed, on the basis of an analysis of these signals, and transmits them to other digital external devices, such as digital computers, recorders and displays. Various instructions are stored in a memory and can be selected at random, and read out and applied to the external devices during data presentation, or can be used in controlling the operation of the inventive device during an analysis of the states of the devices being monitored. The instruction memory can also be charged with various programs to apply data to the external devices. Such data application program is selected by analyzing the state of the monitored device, at the moment it has changed state. The processing of such programs is discontinued if a higher-priority data transmission means is ready to transmit data.