This seminar presentation summarizes the e-ball technology, a spherical computer designed by Apostol Tnokovski. It discusses the architectural structure of the e-ball, which has a 120x120mm motherboard inside a 160mm sphere. It works through using an LCD projector to project the screen and a virtual keyboard, which uses sensor technology and IR light sources to track finger movements and project the keyboard interface onto any flat surface. The presentation concludes that the e-ball is a portable and efficient computer that could be used in medical and industrial fields.