Generation languages

1. The first generation languages, or 1GL, are low-level languages that are machine language.
2. The second generation languages, or 2GL, are also low-level languages that generally consist of assembly languages.
3. The third generation languages, or 3GL, are high-level languages such as C.
4. The fourth generation languages, or 4GL, are languages that consist of statements similar to statements in a human language. Fourth generation languages are commonly used in database programming and scripts. 
5. The fifth generation languages, or 5GL, are programming languages that contain visual tools to help develop a program. A good example of a fifth generation language is Visual Basic.

Also see: Assembly, Generation, High-level languages, Low-level language, Machine language, Programming definitions