Selection candidate display method, selection candidate display device, and input/output device

A selection candidate display method and selection candidate display device, and input/output device are disclosed. When the number of receivable broadcast stations is not 'four' or below, a control unit allocates the receivable broadcast stations to three-divided logical areas out of four-divided logical areas, allocates a scroll area (S) to the remaining one logical area, and displays the channel numbers of the allocated receivable broadcast stations and information indicating the scroll area (S), for example, 'S' on each logical area of circle pads.When the logical area to which the scroll area (S) is allocated is operated, the control unit moves the scroll area (S) to the adjacent logical area and allocates a receivable broadcast station following the broadcast station allocated to the remaining logical area out of the logical areas adjacent to the scroll area to the logical area which was the scroll area.