US scientists build spring-powered computer that runs without electricity

Scientists at St. Olaf College and Syracuse University have created mechanical computers that operate through springs and steel components without electricity or batteries. These spring-powered systems perform computational tasks like counting, logic operations, and memory storage by relying on materials that "remember" previous movements or forces. The technology could prove valuable in extreme environments where electronics fail, potentially enabling battery-free prosthetic limbs that respond to pressure or sensors that function inside jet engines using only vibration.