To provide a communication cable having an automatic discrimination means for preventing erroneous connection to equipment, collecting data, such as bio information from external equipment appropriately, eliminating the need for an external equipment automatic recognition system using complex software, and drastically reducing costs, and to provide a monitor/display system which uses the communication cable.

The communication cable is used to communicate a plurality of external equipment and a display/control section via a communication cable in real time, and comprises a communication connector, provided at the communication cable for collecting the output data of the external equipment and for displaying state, and a discrimination data collection means for automatically and uniquely discriminating the type of the external equipment, while being provided near the communication connector.