A display/input device including a display panel and a touch panel portion, wherein the display panel displays one of a plurality of item selection screens including a plurality of selection keys for selection of a setting item for which to make a setting; the touch panel portion accepts user operation; and the display/input device further includes a control portion which, on recognizing based on an output from the touch panel portion a prescribed switching operation being done, makes the display panel display an item selection screen of a different page, and which recognizes based on an output from the touch panel portion a prescribed fixing operation on a displayed selection key and a thereby fixed key, which is the selection key on which the fixing operation has been done, so that, on recognizing based on an output from the touch panel portion a prescribed first determination operation when the fixing operation is undone, the control portion makes the display panel display, with no selection key fixed, an item selection screen that includes selection keys that were being displayed when the fixing operation was undone, characterized in that on recognizing based on an output from the touch panel portion a prescribed second determination operation when the fixing operation is undone, the control portion makes the display panel display the item selection screen in which the fixing operation was started, on recognizing based on an output from the touch panel portion that the switching operation has been done while the fixing operation is being maintained, the control portion makes the display panel display the item selection screen of the different page such that the fixed key is displayed at a same display position as in the item selection screen in which the fixing operation was started, the control portion recognizes as the switching operation an operation on a switch key, the switch key comprising: a Next key for switching to an item selection screen of a next page and a Previous key for switching to an item selection screen of a previous page, and the control portion displays the fixed key temporarily on the item selection screen of the different page so long as the fixing operation is being maintained. which, on recognizing based on an output from the touch panel portion a prescribed switching operation being done, makes the display panel display an item selection screen of a different page, and which recognizes based on an output from the touch panel portion a prescribed fixing operation on a displayed selection key and a thereby fixed key, which is the selection key on which the fixing operation has been done, so that, on recognizing based on an output from the touch panel portion a prescribed first determination operation when the fixing operation is undone, the control portion makes the display panel display, with no selection key fixed, an item selection screen that includes selection keys that were being displayed when the fixing operation was undone, on recognizing based on an output from the touch panel portion a prescribed first determination operation when the fixing operation is undone, the control portion makes the display panel display, with no selection key fixed, an item selection screen that includes selection keys that were being displayed when the fixing operation was undone, a Next key for switching to an item selection screen of a next page and a Previous key for switching to an item selection screen of a previous page,