An electronic apparatus comprising: an interface connected to a modular display apparatus (100', 100"), the interface comprising a plurality of ports that are connected to the modular display apparatus (100', 100"); and a processor configured to: scale an image signal received from an external device to a predetermined resolution, based on a number of the plurality of ports that are connected to the modular display apparatus (100', 100"), divide each display module among a plurality of display modules included in the modular display apparatus (100', 100") into a plurality of groups in a first direction, wherein the first direction is a vertical direction, wherein the plurality of groups each include a plurality of the display modules, decompose the scaled image signal to image signals corresponding to each of the plurality of groups, and transmit the decomposed image signals to each of the plurality of groups via the interface connected to each of the plurality of groups through each of the plurality of ports, wherein each of the plurality of the ports is connected to each of the display modules positioned at a lower side, among the display modules belonging to each of the plurality of groups, wherein display modules included in each of the plurality of groups are configured to connect to each other so that a display module positioned at a lower side relatively in each of the plurality of groups transmits the decomposed image signals to a display module positioned at an upper side relatively in each of the plurality of groups, and wherein each of the display modules included in each of the plurality of groups is configured to receive a decomposed image, decode the decomposed image, crop the decoded image corresponding to the position of the display module and reproduce the obtained image. an interface connected to a modular display apparatus (100', 100"), the interface comprising a plurality of ports that are connected to the modular display apparatus (100', 100"); and a processor configured to: scale an image signal received from an external device to a predetermined resolution, based on a number of the plurality of ports that are connected to the modular display apparatus (100', 100"), divide each display module among a plurality of display modules included in the modular display apparatus (100', 100") into a plurality of groups in a first direction, wherein the first direction is a vertical direction, wherein the plurality of groups each include a plurality of the display modules, decompose the scaled image signal to image signals corresponding to each of the plurality of groups, and transmit the decomposed image signals to each of the plurality of groups via the interface connected to each of the plurality of groups through each of the plurality of ports, wherein each of the plurality of the ports is connected to each of the display modules positioned at a lower side, among the display modules belonging to each of the plurality of groups, wherein display modules included in each of the plurality of groups are configured to connect to each other so that a display module positioned at a lower side relatively in each of the plurality of groups transmits the decomposed image signals to a display module positioned at an upper side relatively in each of the plurality of groups, and wherein each of the display modules included in each of the plurality of groups is configured to receive a decomposed image, decode the decomposed image, crop the decoded image corresponding to the position of the display module and reproduce the obtained image. scale an image signal received from an external device to a predetermined resolution, based on a number of the plurality of ports that are connected to the modular display apparatus (100', 100"), divide each display module among a plurality of display modules included in the modular display apparatus (100', 100") into a plurality of groups in a first direction, wherein the first direction is a vertical direction, wherein the plurality of groups each include a plurality of the display modules, decompose the scaled image signal to image signals corresponding to each of the plurality of groups, and transmit the decomposed image signals to each of the plurality of groups via the interface connected to each of the plurality of groups through each of the plurality of ports, wherein each of the plurality of the ports is connected to each of the display modules positioned at a lower side, among the display modules belonging to each of the plurality of groups, wherein display modules included in each of the plurality of groups are configured to connect to each other so that a display module positioned at a lower side relatively in each of the plurality of groups transmits the decomposed image signals to a display module positioned at an upper side relatively in each of the plurality of groups, and wherein each of the display modules included in each of the plurality of groups is configured to receive a decomposed image, decode the decomposed image, crop the decoded image corresponding to the position of the display module and reproduce the obtained image.