The evolution of computers has been characterized by six generations: first, second, third, fourth, fifth, and sixth. Each generation brought significant advancements in technology, architecture, and applications. The first generation used vacuum tubes, while the second generation used transistors. The third generation introduced integrated circuits, operating systems, and mouse prototypes. The fourth generation saw large-scale integration and the introduction of microcomputers and workstations. The fifth generation focused on parallel processing and distributed computing, while the sixth generation emphasized parallel computing and wide area networks.