Communication room, computer noise:
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Computer mouse movement
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Turn on, turn off the old monitor
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Office work, typewriter, environmental sounds
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Jet printer
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Double click computer mouse
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Signal read information, Computer interface
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Write, Hard disk, read, room noise
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Floppy disk reading
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Manual copy machine
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Matrix printer
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Input error sound, Pressing a keypad
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Sound signal of a bios computer, bios
★★★★★