Various examples of the present invention relate to an apparatus and a method for displaying data in an electronic device. A method for performing operations in an electronic device, comprises the steps of: displaying a circular user interface on a screen, wherein the circular user interface includes a circular arrangement of numbers, characters, special characters and/or icons in selected orders; detecting the first rotation of a wheel by using a sensor; determining whether the wheel is stopped during the pre-selected time period after the first rotation; selecting one from the numbers, the characters, the special characters, and/or the icons; and rotating or rearranging the circular arrangement on the screen in response to the determination that the wheel is stopped during the selected time period such that the pre-designated or proposed one among the numbers, the characters, the special characters and/or the icons is located at the selected location.