Evolutionary history and classification of programming languages

First, the evolutionary history of programming languages: Machine language assembly language high-level languages

1. Machine language:

(1) The computer can only accept binary code, the instructions described in binary code 0 and 1 are called machine instructions, and the set of all machine instructions forms the machine language of the computer.
(2) Machine language belongs to low-level language.

2. Assembly Language:

(1) In fact, the same quality and machine language, are directly to the hardware operation.

(2) The assembly language instruction adopts the English abbreviation identifier, which is easier to identify and remember.

3. Advanced Language:

(1) The machine instruction is synthesized into a single instruction, which is mainly relative to the assembly language, not specific to a particular linguistic, but includes many programming languages (c\c==,java,php,python,go,c#, etc.).

(2) Be more friendly to developers and improve development efficiency.

(3) A program compiled by a high-level language cannot be directly recognized by the computer and must be converted before it can be executed.

Ii. Classification of high-level languages

(* It is because high-level language compiled programs need to be converted to be executed, so there are different ways of converting: compile and interpret classes)

1. Compiling the class

(* Generated program file code is machine language, no need to re-translation, execution speed, execution efficiency, cross-platform is poor, the modification needs to be recompiled into the program files, more inconvenient, such as C, C + +, Delphi)

2. Explanation Class

(* side-by-side translation, less efficient, cannot generate executable files that can be executed independently (question: is the executable file referring to the. exe?). It seems that it can be generated. ), you must first install the interpreter, flexible, can dynamically adjust, modify the application, such as Python,java)

Note: The marked asterisk for self-understanding content, if there is inappropriate, please feel free!

Evolutionary history and classification of programming languages