Toshiba marked the 25th birthday of its notebooks by unveiling the first dual-touchscreen Windows tablet computer. The Libretto W100 has twin seven-inch, 1024x600, multi-touch displays that control virtually the entire Windows 7 interface. One display can work separately as a keyboard (with vibration feedback) or just as a second display; an accelerometer lets users tilt the device on its side for e-book reading.
