A display having a data driving integrated circuit includes N number of output channels (where N is an integer) having at least two regions including a first output channel and an Nth output channel, a data output channel group including M data output channels (where M is an integer less than N), the M data output channels supplying pixel data to a corresponding number of the data lines in accordance with a desired resolution of the display, wherein (N−M) output channels are not supplied with pixel data, and the (N−M) output channels are located between the first output channel and the Nth output channel, and a channel selector selecting the M data output channels.