The document describes the Five Pen PC technology, a system that utilizes five interconnected pens to create a complete computer setup, including a CPU pen, LED projector, virtual keyboard, camera, and communication device. Designed by Toru Ichhihashi and first showcased in 2003, this innovative technology offers advantages such as portability and wireless functionality, but also presents challenges like cost and unclear feasibility. Key features include a dual-core processor, laser-based virtual keyboard, and substantial data storage capacity.