To put it simply, it is the process of writing a programmed program, letting computer code solve a certain problem, specifying a certain operation mode for a computing system, making the computing system run according to this calculation mode, and finally getting the corresponding results.

In order to make the computer understand people's thoughts, human beings tell it the ideas, methods and means of the problems to be solved in a way that the computer can understand, and let the computer complete people's instructions.