Introduction to programming:
It is the Chinese abbreviation of programming, and it is the process of making 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 intentions, human beings must tell the computer the ideas, methods and means of the problems to be solved in a form that the computer can understand, so that the computer can work step by step according to people's instructions and complete a certain task. This communication process between people and computing systems is programming.
Machine language:
In a computer system, machine instructions specify specific actions of the computer system. When designing and manufacturing hardware, a series of computers use many instructions to specify the basic operations that the series of computers can perform, and these instructions together constitute the instruction system of the series of computers.
In the early days of computer application, programmers used the instruction system of machines to write computer application programs, which were called machine language programs. Programs written in machine language occupy less memory and have high execution efficiency, because each instruction corresponds to a specific basic action of the computer.
Assembler:
Assembler. Using assembly language to write computer programs, programmers still need to be very familiar with the hardware structure of computer systems, so the program design itself is still inefficient and cumbersome. But it is precisely because of the close relationship between assembly language and computer hardware system that in some specific occasions;
For example, assembly language is still a very effective programming tool for system core programs and real-time control programs that require high space-time efficiency. But it has irreplaceable characteristics, such as some single-chip computers or some programs that directly control hardware must use assembly language.
High-level language:
High-level language is a programming language close to human natural language and mathematical language. According to the different starting points and methods of programming, high-level languages are divided into process-oriented languages and object-oriented languages, such as Fortran language, C language and Chinese programming language.