LED position sensors; LED motion recognition sensors; LVDT sensor controller; sensors for measuring distance; downloadable software for data processing; motion detecting sensors; motion recognizing sensors; digital wireless telecommunications software for communicating between sport equipment and mobile app on phone or computer; digital sensor apparatus for sensing table tennis ball bounce or position, other than for medical use; digital boards, namely, LED and OLED display panels; downloadable electronic game software for wireless devices; electronic sports training simulators; sensors for determining position; downloadable computer application software for mobile phones, namely, software for tracking and sharing performance data of user and control of the training device; electronic indicator panels; electronic score recorders; electronic score display apparatus; electronic scoreboards; electronic programming units being computer networking hardware; downloadable electronic manuals in the field of table tennis