FROM the first 30-ton giant to a TV-sized machine and finally, to something to fit on your laptop (笔记本电脑). From the calculator (计算器) to the Internet. The computer keeps changing. Today, people are trying to make computers that are more friendly to users. At the NextGen PC Design Competition held by Microsoft, competitors (参赛者) surprised users with their unbelievable (难以置信的) ideas.