History of virtual reality development

The development history of virtual reality technology can be divided into four stages: the simulation of the dynamic of sound is the first stage of the virtual reality (1963 ago), the virtual reality is the second stage (1963-1972), the emergence of virtual reality concept and the formation of the theory is the third stage (1973-1989), the virtual reality theory is further perfected and applied to the fourth stage (1990-2004).