Type of mouse that has a ball located on the bottom that rolls around on a flat surface as the mouse is moved. Sensors inside the mouse determine the direction and distance of the movement - Input. Optical mouse. Type of mouse that uses a laser to detect the mouse's movement and has no moving parts - Input.
The Strategic Defense Initiative (SDI) was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (Intercontinental ballistic missiles and Submarine-launched ballistic missiles).
The Soka Gakkai International (SGI) is a lay Buddhist organization upholding the tradition that originated with Shakyamuni (Gautama Buddha) and developed as it was inherited by India's Nagarjuna and Vasubandhu, China's T'ien-t'ai and Miao-lo and Japan's Dengyo and Nichiren.he specific Buddhist tradition embraced by the SGI is based on the Mahayana scriptures and the Lotus Sutra in particular. The SGI is engaged in faith practices and activities in society that correspond with the compassionate spirit of the Lotus Sutra in the contemporary world.