| 摘要 |
PURPOSE: To obtain a greatly expressive and zestful blinking state by outputting, to a driving circuit for light emitting element, a combined logic signal containing the output signal of the rear part of a programmable counter for musical note generating circuit, and thereby blinking the light emitting element in accordance with the length of the outputted musical note. CONSTITUTION: An oscillating frequency, which is generated in the CR oscillation circuit 1 of a melody IC for driving a light emitting element, is divided into suitable frequencies by a frequency divider circuit 2 and inputted to a tempo- generating programmable counter 3 constituted of plural FF's. A frequency- divided signal with a required length is outputted by this counter 3 in accordance with the output of the tempo ROM 4, inputted in a musical note generating programmable counter 5 constituted of plural FF's with a set, and controlled by a musical note ROM 6, so that a signal is outputted to an output terminal 7 - a signal frequency-divided to a length required for the main ROM in the next stage. Then, the externally attached light emitting element 10 is blinked in accordance with the length of a musical note. |
