In the early days, Walter Isaacson says, computers were "big ol' things with vacuum tubes" that took up entire rooms. For example, the electric analog computer named ANACOM (shown here in 1950 at Caltech) weighed 6,000 pounds and filled 13 cabinets. AP hide caption

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Slow-loading messages will appear on some of your favorite sites Wednesday as part of a protest for net neutrality. But the sites won't actually be loading slower — the banners will be displayed just to make a point. iStockphoto hide caption

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The Star-Spangled Banner — the flag that inspired our National Anthem — on display at the Smithsonian's National Museum of American History. Hugh Talman/Courtesy of the Smithsonian's National Museum of American History hide caption

itoggle caption Hugh Talman/Courtesy of the Smithsonian's National Museum of American History

Brazilian President Dilma Rousseff delivers a speech during the opening ceremony of the "NETmundial Global Multistakeholder Meeting on the Future of Internet Governance", on Wednesday in Sao Paulo, Brazil. Nelson Almeida/AFP/Getty Images hide caption

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Comcast is the largest cable company and home Internet service provider in the United States. A recent survey found that many Americans give Internet service providers low marks for satisfaction. Matt Rourke/AP hide caption

itoggle caption Matt Rourke/AP