Technical Aspects/Features:

These all have the same basic framework using cameras to sense objects, hand gestures, and touch. The user input is then processed and displayed on the surface using rear projection. The following is a diagram of the Microsoft Surface (Figure B) and an explanation of the parts.
1) Screen: The Surface has an acrylic tabletop which a diffuser makes capable of processing multiple inputs from multiple users. Objects can also be recognized by their shapes or reading coded tags.
2) Infrared: Infrared light is projected onto the underside of the diffuser. Objects or fingers are visible through the diffuser by series of infrared-sensitive cameras which are positioned underneath the surface of the tabletop.
3) CPU – This is similar to a regular desktop. The underlying operating system is a modified version of Microsoft Vista.
4)    Projector – The Surface uses the same DLP light engine in many rear-projection tvs.