| 摘要 |
<p>PURPOSE:To achieve three-music selection with a simple constitution, by providing transistors (TRs) and two flip-flops then TR turn on when two flip-flops turn off. CONSTITUTION:When JK FFs 10, 14 of link connection are reset, a TR20 turns on with a high level Q' output of the FF10 to illuminate a display 18. A TR28 turns on via the FF14 with a negative pulse E through the operation of a switch 36, the FF10 is inverted, the display 18 is distinguished and a display 11 illuminates. When the switch 36 is operated, the display 11 is similarly distinguished and the display 15 illuminates. At this state, when the 1st inter-music detection pulse C is generated from an inter-music signal detection circuit 2, a TR32 is conductive, the FF14 is reset, the display 15 is distinguished and the display 11 illuminates via a TR26 and the FF10. Similarly, the display 18 illuminates with the next recording pulse C and this is continued.</p> |
