Computer simulated laser:
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The USB flash drive is inserted, removed
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Office work, typewriter, environmental sounds
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Opens, closes the CD / DVD tray
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Turn on, turn off the hard drive
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Communication room, computer noise
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Turn on, turn off the old monitor
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Old computer keyboard
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Manual copy machine
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Double click computer mouse
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Jet printer
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Alarm, Computer interface
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CD / DVD drive, disc read
★★★★★