| 摘要 |
A mobile object, such as a hollow ball containing an electronic circuitry system is proposed. The circuitry includes a speech processor and a controller, an integrated circuit for a speech recorder, an integrated circuit for an audio amplifier, a microphone and a power supply and an impact switch and push button switches. In response to impact, the circuitry generates a randomly chosen multiple choice questions. According to the answer chosen by the player, he/she presses a push button switch representing the answer. The electronic system then verifies whether the answer is correct or incorrect and generates a signal accordingly.
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