It is hard to imagine a world without computers. The people found in this book are largely responsible for creating the high-tech world in which we live today. These computer geniuses include early programmers like Grace Hopper and Herman Hollerith, computer chip inventors like Jack Kilby and Robert Noyce, and business people like Steve Jobs and Bill Gates. Take a look at thirteen individuals whose work has helped bring modern computers to their current level. Other people profiled in this volume are John von Neumann, John W. Mauchly, J. Presper Eckert, Jr, An Wang, Stephen Wozniak, Marc Hannah and Marc Andreessen.