Matrix printer:
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Turn on, turn off the old monitor
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Double click computer mouse
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Disc read, closes the CD / DVD tray, Opens
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Insert the disk into the drive, read the
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Repeatedly pressing a computer mouse
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Floppy disk reading
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General noise, Office work
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Computer interface, alarm
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Jet printer
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Removed, The USB flash drive is inserted
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Computer keyboard
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Sound signal of a bios computer, bios
★★★★★