Floppy disk reading:
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Read, room noise, write, Hard disk
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Computer simulated laser
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Manual copy machine
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Old computer keyboard
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Turning on the laptop, fan noise, shutting
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Franking machine
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Computer mouse movement
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Sound signal of a bios computer, bios
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Computer noise, Communication room
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Matrix printer
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Repeatedly pressing a computer mouse
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Removed, The USB flash drive is inserted
★★★★★