Office work, typewriter, environmental sounds:
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Franking machine
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Opening, closing the laptop cover
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Repeatedly pressing a computer mouse
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Floppy disk reading
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Bios, Sound signal of a bios computer
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Matrix printer
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Closes the CD / DVD tray, Opens, disc read
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Room noise, write, Hard disk, read
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Computer mouse movement
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Double click computer mouse
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Signal read information, Computer interface
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CD / DVD drive, disc read
★★★★★