| 摘要 |
A computer mouse includes a housing and a button assembly. The button assembly includes a button, a circuit board, an infrasonic emitter, and an infrasonic receiver. The infrasonic emitter is mounted on the circuit board and emits infrasonic wave. The infrasonic receiver is mounted on the circuit board and is separated from the infrasonic emitter. The infrasonic receiver receives the infrasonic wave from the infrasonic emitter. When the button is pressed, the button impedes a passage of the infrasonic wave from the infrasonic emitter to the infrasonic receiver.
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