Computer interface, signals:
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Repeatedly pressing a computer mouse
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Modem connection, signal, interference
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Fan noise, shutting, Turning on the computer
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Opens, closes the CD / DVD tray
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Opens, disc read, closes the CD / DVD tray
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Turn off the old computer, Turn on
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Sound signal of a bios computer, bios
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Floppy disk reading
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Computer keyboard
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Laser printer
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Office work, general noise
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Matrix printer
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