Office work, typewriter, environmental sounds:
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Old computer keyboard
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Floppy disk reading
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Turn on, turn off the old monitor
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Repeatedly pressing a computer mouse
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Removed, The USB flash drive is inserted
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Signal read information, Computer interface
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Opens, closes the CD / DVD tray
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Matrix printer
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Sound signal of a bios computer, bios
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General noise, Office work
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Computer noise, Communication room
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Room noise, read, write, Hard disk
★★★★★