Old computer keyboard:
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Jet printer
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Insert the disk into the drive, read the
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Photocopy (photocopy)
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Turn off the hard drive, Turn on
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Sound signal of a bios computer, bios
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Alarm, Computer interface
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Matrix printer
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Turning on the computer, fan noise, shutting
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Removed, The USB flash drive is inserted
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Shutting, fan noise, Turning on the laptop
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Signal, Modem connection, interference
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Double click computer mouse
★★★★★