Old computer keyboard:
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Input error sound, Pressing a keypad
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Opening, closing the laptop cover
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Turn off the old computer, Turn on
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CD / DVD drive, disc read
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Interference, Modem connection, signal
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Write, read, Hard disk, room noise
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Closes the CD / DVD tray, disc read, Opens
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Floppy disk reading
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Franking machine
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Repeatedly pressing a computer mouse
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Opens, closes the CD / DVD tray
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Laser printer
★★★★★