Sound signal of a bios computer, bios:
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Manual copy machine
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Computer simulated laser
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Opening, closing the laptop cover
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Turn on, turn off the old monitor
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Matrix printer
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Room noise, write, read, Hard disk
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Laser printer
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Turn on, turn off the hard drive
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Shutting, fan noise, Turning on the computer
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General noise, Office work
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Repeatedly pressing a computer mouse
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Removed, The USB flash drive is inserted
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