Computer simulated laser:
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Turn off the old monitor, Turn on
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The USB flash drive is inserted, removed
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Computer simulated laser
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Pressing a keypad, input error sound
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Opens, closes the CD / DVD tray
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Write, room noise, read, Hard disk
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Turn on, turn off the hard drive
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Old computer keyboard
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Turning on the laptop, shutting, fan noise
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Laser printer
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Computer keyboard
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Sound signal of a bios computer, bios
★★★★★