Computer keyboard:
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Communication room, computer noise
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Signals, Computer interface
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Laser printer
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Closing the laptop cover, Opening
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Manual copy machine
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Closes the CD / DVD tray, Opens
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Disc read, CD / DVD drive
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Sound signal of a bios computer, bios
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Franking machine
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Double click computer mouse
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Turning on the laptop, shutting, fan noise
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Turn on, turn off the hard drive
★★★★★