A liquid discharge system (21, 100) comprising: a print head configured to discharge liquid; and a digital signal output circuit configured to output a digital signal to the print head, wherein the print head includes a supply port (24; 661) to which the liquid is supplied, a nozzle plate that includes a plurality of nozzles for discharging the liquid, a substrate that includes a first side and a second side, which are provided in parallel to each other, a third side and a fourth side, which are provided in parallel to each other, a first surface, and a second surface which is different from the first surface, and that has a shape in which the first side is orthogonal to the third side and the fourth side, and the second side is orthogonal to the third side and the fourth side, a connector that is provided on the first surface and to which the digital signal is input, and an integrated circuit that is provided on the first surface, that is electrically coupled to the connector, to which the digital signal is input through the connector, and that is configured to output an abnormality signal which indicates existence/non-existence of abnormality of the print head, the substrate is provided between the nozzle plate and the supply port, the connector is provided along the first side, the integrated circuit is provided in a place which is not adjacent to the connector, and a shortest distance between the supply port and the first surface is longer than a shortest distance between the supply port and the second surface. a print head configured to discharge liquid; and a digital signal output circuit configured to output a digital signal to the print head, wherein the print head includes a supply port (24; 661) to which the liquid is supplied, a nozzle plate that includes a plurality of nozzles for discharging the liquid, a substrate that includes a first side and a second side, which are provided in parallel to each other, a third side and a fourth side, which are provided in parallel to each other, a first surface, and a second surface which is different from the first surface, and that has a shape in which the first side is orthogonal to the third side and the fourth side, and the second side is orthogonal to the third side and the fourth side, a connector that is provided on the first surface and to which the digital signal is input, and an integrated circuit that is provided on the first surface, that is electrically coupled to the connector, to which the digital signal is input through the connector, and that is configured to output an abnormality signal which indicates existence/non-existence of abnormality of the print head, a supply port (24; 661) to which the liquid is supplied, a nozzle plate that includes a plurality of nozzles for discharging the liquid, a substrate that includes a first side and a second side, which are provided in parallel to each other, a third side and a fourth side, which are provided in parallel to each other, a first surface, and a second surface which is different from the first surface, and that has a shape in which the first side is orthogonal to the third side and the fourth side, and the second side is orthogonal to the third side and the fourth side, a connector that is provided on the first surface and to which the digital signal is input, and an integrated circuit that is provided on the first surface, that is electrically coupled to the connector, to which the digital signal is input through the connector, and that is configured to output an abnormality signal which indicates existence/non-existence of abnormality of the print head, the substrate is provided between the nozzle plate and the supply port, the connector is provided along the first side, the integrated circuit is provided in a place which is not adjacent to the connector, and a shortest distance between the supply port and the first surface is longer than a shortest distance between the supply port and the second surface.