Toshiba on Monday introduced the Excite Pro tablet computer, an Android device with Nvidia's new Tegra 4 mobile processor. It also debuted the Excite Pure and Excite Write tablets. Pricing for the trio ranges from $300 to $600; they will be available on June 25. The company also rolled out the Qosimo X75 notebook computer, which features Intel's fourth-generation Core i7 "Haswell" quad-core processor. Pricing starts at $1,550.