| 摘要 |
An educational toy keyboard is constructed of a main body, keys arranged on the main body, and transparent cylinders corresponding to the individual keys. The transparent cylinders are mounted on the main body and tone-indicating characterful figures are fitted for flotation within the respective cylinders. The tone-indicating characterful figures are floated by buoyancy of compressed air. The keyboard further includes a blower for feeding the compressed air, and a sound-generating circuit capable of sounding a scale or melody in response to depression of the individual keys. When the individual keys are selectively depressed, the sound-generating circuit sounds the scale or melody and the tone-indicating characterful figures are caused to float in the corresponding transparent cylinders.
|
