| 摘要 |
PURPOSE:To simplify a driving circuit for a titled device by lighting only the corresponding display bodies selectively from a group of the display bodies, and making the display bodies common even for plural pieces for input signals, and lighting only the display bodies, at the respectively corresponding levels selectively, thereby lighting only the necessary dots, reducing electric power consumption and displaying levels efficiently. CONSTITUTION:Output signals R1 and R2 of a high level are applid from a level discriminating circuit I for an input signal Rin to the bases of transistors TR11, TR12 belonging to the driving circuit of a display body D1, and with respect to the output signal R2, said signal is applied to the base of a transistor TR21 belonging to a driving circuit of a display body D2. The TR11 is turned on by the signal R1 and the TR21 is turned on by the signal R2. However, the signal R2 turns the TR12 on and brings the base of the TR11 at the earth potential. Therefore, the TR11 goes off and in the end the body D1 is put out, and only the body D2 corresponding to the higher level is lighted, so that only one body D2 is selected from the group of the display bodies and is displayed like a dot. |
