<P> Displaying images that looked "real" took some innovation . New techniques were developed to make these curved, low - resolution images viewable from the ground . One adjustment was to move images slowly across the display to prevent blurring . </P> <P> The 2001 upgrade to the sound system raised the power to 555,000 watts . </P> <P> The 2004 upgrade features a 12.5 - million LED display and more color combinations than the original display . The old control system was replaced by a central control room using 10 computers . </P> <P> The city's SDX and Deuce buses stop here . </P>

How many computers control the freemont street lights