Human innovation is the basis of human survival and development, and scientific and technological innovation are the precursors of industrial evolution. What is the role of cognition in innovative activity? What are the characteristics of the process of its development in a creative environment? This paper proposes the internal mechanism of class creation as an innovative activity from the point of view of industrial evolution and argues that class creation occurs on the basis of cognition. Taking the history of the computer industry as an example, the paper analyses the position of class creation in the process of technological innovation and discusses the role of cognitive activities in the innovation process. It is pointed out that various class-creation activities are the important reasons that drive the evolution of the computer industry.