In detail description about evolution of programming languages.

1. COMPUTER PROGRAMMING LANGUAGE
GENERATIONS
• The term generation summarizes major evolutionary advances
in programming languages.
• 0GL:-
i. Low level language is Machine understandable language
which is Binary / 0 or 1.
ii. Low-level programming languages are sometimes divided
into two categories: first generation and second generation.
Machine language is Example of 1GL. Assembly language is
Example of 2GL.

2. 1GL
• First-generation languages were basic binary data instructions
for processors to execute.
• Code is made up of 0s and 1s.

3. 2GL
• Second-generation languages are also low level language but
provide one abstraction level on top of the machine code.
• Second-generation languages use an assembler to convert
language statements into machine language.
• Second-generation languages are sometimes used in
kernels and hardware drives, but more commonly used for
video editing and video games.

4. 3GL
• Third-generation languages use high-level language
statements that are converted by a compiler into specific
programming language statements.
• A third-generation language, such as C, C++ and Java, require
a considerable amount of programming skills and knowledge.

5. 4GL
• Fourth-generation languages closely resemble human grammar
and language.
• These languages are often used for accessing databases.
• For example SQL(structured query language) is declarative
programming language, Used communicate with database.
• Perl , PHP, Python, Ruby, and SQL are examples of 4GL.

6. 5GL
• Fifth-generation languages use a graphical interface to create
language statements that are compiled with a third- or fourth-
generation language compiler.
• Some of the biggest computer businesses, such as IBM and
Microsoft, make fifth-generation visual programming solutions for
creating new apps.
• Programming with a visual interface allows users to easily understand
and complete object-oriented programming tasks.
• 5GL, are programming languages contains visual tools to help
develop a program.
• Examples of fifth generation languages include Mercury, OPS5, and
Prolog.

7. CLASSIFICATION OF COMPUTER
LANGUAGES