Sound signal of a bios computer, bios:
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Old computer keyboard
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Manual copy machine
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Matrix printer
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Removed, The USB flash drive is inserted
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Repeatedly pressing a computer mouse
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Computer mouse click
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Turn off the old monitor, Turn on
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Input error sound, Pressing a keypad
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Turning on the laptop, shutting, fan noise
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CD / DVD drive, disc read
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Signal, Modem connection, interference
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Turn on, turn off the hard drive
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