History of the Programming Languages

• 1940's - Rewire Circuits
• Early 1950's - Machine Language: zeros and ones
  • See Fritz Ruehr's simulator
• 1950's - Assembly Language
  • Symbolic Version of Machine Language, Not Portable. Translated by Assembler
• Late 1950's - FORTRAN,
  • Backus at IBM
  • FORMula TRANSlator
  • First High-Level Programming Language
  • First Compiler
• 1960's - Simula
  • Elements of Object-Oriented Languages
• 1970's
  • Pascal, N. Wirth, Teaching Language
  • C
    • Language for Systems Programming.
    • Small and Fairly Portable.
    • Used to Implement Unix on PDP-11.
    • Thompson and Ritchie at Bell Labs.
• Small Talk
  • Fully Object-Oriented
  • Interpreted and Slow
  • Xerox Park
• 1980's, C++
  • Stroustrup at Bell Labs
  • Evolved from C
  • Large, Complex but Fairly Portable
• Java Programming Language
  • Sun Microsystems 1995
  • Evolved from C++ and SmallTalk
  • Object-Oriented
  • Completely Portable

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