| 摘要 |
PURPOSE:To obtain an animation clock full of variations, by controlling the display of animations by using a sequential circuit composed of a D latch and PLA. CONSTITUTION:A signal of a sequential circuit composed of a D latch 16 and PLA 17 and a signal of an animation data selecting circuit 21 are delivered onto a data bus DB by control signals T5, T6 and T7 when an animation display is selected. Then, segment positions are selected in a displayed data switching circuit 22, while the content of an animation to be displayed is selected in a timing circuit 23. A control circuit 18 determines the state of a switch, and stops the display or controls the speed of variation of the display by controlling the clock of the D latch 16 by an animation clock controlling circuit 20. |
