Fairchild's first microchip combined four transistors, six resistors and their interconnecting wires onto a single sliver of silicon, in 1960. Today's microprocessors can employ more than 1 billion transistors. Fairchild/Courtesy of the Computer History Museum hide caption

itoggle caption Fairchild/Courtesy of the Computer History Museum

Conservative talk show host Rush Limbaugh talks with guests at the White House in 2009. Limbaugh apologized March 3 to Georgetown University law student Sandra Fluke after he branded her a "slut" and "prostitute." Ron Edmonds/AP hide caption

itoggle caption Ron Edmonds/AP