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Influences on Language Design - Programming Languages - Lecture Slides, Slides of Programming Languages

Mody University of Science and TechnologyProgramming Languages

Influences on Language Design, Programming methodologies, Language Categories, Imperative, Functional, Applicative, Application Domains, Genealogy, Object Oriented are key points of this lecture. Programming languages is basic subject of computer science. Its not about any specific language but almost cover all of them.

Typology: Slides

2011/2012

Uploaded on 11/10/2012

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Von Neumann Architecture - 1945
• Shared program technique
–Simple hardware that need not be
hardwired for each program
–Complex instructions to be used to
control the hardware, allowing it to be
“reprogrammed” much faster.
•Conditional Control Transfer
–Subroutines or small blocks of code that
could be jumped to in any order instead
of sequentially ordered steps.
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Download Influences on Language Design - Programming Languages - Lecture Slides and more Slides Programming Languages in PDF only on Docsity!

Von Neumann Architecture - 1945

  • Shared program technique
    • Simple hardware that need not be

hardwired for each program

  • Complex instructions to be used to

control the hardware, allowing it to be

“reprogrammed” much faster.

  • Conditional Control Transfer
    • Subroutines or small blocks of code that

could be jumped to in any order instead

of sequentially ordered steps.

Influences on Language Design

Programming methodologies

  • 1950s and early 1960s:
    • Simple applications; worry about machine efficiency
  • Late 1960s:
    • People efficiency became important
    • readability, better control structures
  • Late 1970s:
    • Data abstraction
  • Middle 1980s:
    • Domain and data complexity - Object-oriented

programming

  • Today
    • Web and networked environment; distributed computing

Application Domains

1. Scientific applications

• simple data structures, large FP operations - FORTRAN

2. Business applications

• reports, decimal arithmetic, character operations - COBOL

3. Artificial intelligence

• Symbol processing, logic programming – Lisp, Prolog

4. Embedded systems

• Concurrent programming - Ada

5. Systems programming

• execution efficiency, low-level features – PL/1, BLISS, C

6. Scripting languages

• list of commands – batch files, ksh, Perl

7. Special purpose languages

• Hundreds of languages

The First Programmer was a Lady

Charles Babbage and Ada Lovelace, lived in London of Dickens and Prince
Albert (and knew them both). A hundred years before some of the best minds
in the world used the resources of a nation to build a digital computer, these
two eccentric inventor-mathematicians dreamed of building their “Analytical
Engine”. He constructed a practical prototype and she used it, with notorious
lack of success, in a scheme to win a fortune at the horse races. Despite
their apparent failures, Babbage was the first true computer designer, and
Ada was history’s first programmer.
Rheingold, Tools for Thought: The history and future of mind expanding
technology, The MIT Press, 2000.
  • Analytical Engine (1833) – key features
    • Memory (called store), jump, loop, subroutines
    • Motivated by the success of power looms

Genealogy (MAP 2)