During this time, the screen name field of the tweet is displayedon the LED display, alternated every five seconds by the number of seconds left before the machine becomes active again.
Meanwhile, Serena Williams displayed her best form in roughly 18 months in winning at Charleston on green clay earlier this month, then led the U.S. Fed Cup team to a 5-0 sweep on red clay in Ukraine this past weekend, earning the team a berth in the World Group next year.