TheoryBook

TheoryBook is a line of TSUG laptop computers manufactured by Theorysonic. It is a high-end Theorysonic laptop computer.

History
TheoryBook was first released on May 14, 1986, as a battery-powered portable computer and bundles with Theorynet service. It has built-in trackball and keyboard.

TheoryBook TW is the first to have TheoryClear LED display.

TheoryBook X7 is the first to have touchscreen.

Software
The TheoryDesk runs TSUG. The latest version is TSUG X8.

Reception
TheoryBook received positive reviews from critics.