Programming languages have evolved from imperative languages like machine code and assembly language in the 1960s to more declarative languages from the 1970s onward. Declarative languages include functional languages like Lisp, 4GL languages like SQL, and literate languages like HTML/CSS and PHP, while imperative languages also include procedural languages like C and BASIC and object-oriented languages like C++, Java, and Python.

1. Programming languages have being evolved from imperative
paradigm to declarative paradigm gradually
(Mathematics)
Declarative
Functional
Lisp 4GL
SQL
Literate
HTML/CSS, PHP
OOP, Functional
JavaScript, Perl,
OOP Python, C#, Ruby
C++, Java,
Procedural Objective-C
(Electronics)
Imperative
C, BASIC,
Imperative PASCAL
Assembly
Imperative
Machine Code
1960’s 1970’s 1980’s 1990’s 2000’s