Turning on the computer, fan noise, shutting down:
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Manual copy machine
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Disc read, CD / DVD drive
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Disc read, closes the CD / DVD tray, Opens
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Computer mouse movement
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Bios, Sound signal of a bios computer
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Floppy disk reading
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Jet printer
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Turn on, turn off the old monitor
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Closes the CD / DVD tray, Opens
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Typewriter, Office work, environmental sounds
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Repeatedly pressing a computer mouse
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Alarm, Computer interface
★★★★★