Abstract: In a rotative desk clock having in a main body of it a clock module, a driving module and a control module for sound controlling or touch controlling, wherein the driving module includes a rotary disk exposed downwardly out of the main body, when the control module is touched by a hand or senses the change of sound waves, it activates the driving module to rotate a rotary disk; thereby if the rotary disk is placed on the desk, the main body can rotate relatively to the rotary disk. Thus a dynamically rotating clock is formed.

Abstract: A multifunctional desk-top inductive clock comprising: a display screen to output and display various data modes; a backlight board to output colors connecting with the display screen in order that the colors output from the backlight board directly projects onto the display screen; an induction controller connecting with the backlight board in order to simultaneously control the backlight board to change output colors and to render a display screen to change to display another data mode when the induction controller senses the ambient signals of the desk clock; and an electric power supplying module to supply electric power for the above stated elements.

Abstract: A clock capable of automatically switching to any one of plural functions when the clock is turned to stand on each of four sides is controlled by a gravity operated switch that includes a pair of orthogonally positioned frames, with each frame containing a pair of opposed holding areas, a pair of opposed stop areas, a pair of conductors disposed in each holding area and a steel ball movable between the stop and holding areas for either connecting the conductors in each holding area to electrically execute a function or be disposed in a stop area where no function is executed.