The original meaning of the mother is the uterus, the mother who controls the center and the place where life is born. Mathematically, a matrix refers to a two-dimensional data table arranged vertically and horizontally, which originated from a square matrix composed of coefficients and constants of an equation. This concept was first put forward by British mathematician Kelly in19th century. The concept of matrix also has many applications in production practice, such as the matrix diagram method for protecting personal accounts and the matrix card system (proposed by Shenzhen network domain) and so on. The original meaning of "matrix" is also commonly used. For example, the analog device responsible for the switching control of the front-end video source and control line in the monitoring system is also called matrix.