| 摘要 |
PURPOSE: A digital computer keyboard is provided to recover the tiredness and weariness caused by the long time use of computer with a fragrance and ozone. CONSTITUTION: The keyboard(1) possesses a fragrance source storage(2), an anion generator(13), a fragrance entrance/exit button(9), a fragrance sensor(3), a power source(4), an alarm(6), an alarm sensor(7), an operating circuit(8) and an ozone generator(11). As the operation sensor(12) is operated by the operation circuit every hour, the ozone, the fragrance and the alarm sound is discharged every hour.
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