Computer simulated laser:
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Repeatedly pressing a computer mouse
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Turn on, turn off the hard drive
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Franking machine
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Double click computer mouse
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Input error sound, Pressing a keypad
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CD / DVD drive, disc read
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Manual copy machine
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Communication room, computer noise
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Jet printer
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Turn on, turn off the old monitor
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Old computer keyboard
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Closing the laptop cover, Opening
★★★★★