CS101 Introduction to Computing
Lecture 19
Programming Languages
1
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Understanding Programming Languages: Types, Differences, and Roles, Slides of Introduction to Computing
An overview of programming languages, discussing their role in computing, the differences between low- and high-level, interpreted and compiled, and structured and object-oriented languages. It also covers the history of programming languages and their impact on software development.
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2011/2012
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CS101 Introduction to Computing
Lecture 19
Programming Languages
During the last lecture …
- We continued our discussion on algorithms that we had started during the 16 th^ lecture
- In particular, we looked at the building blocks that are used in all algorithms
- We also discussed the pseudo code and flowcharts for particular problems
- In addition, we outlined the pros and cons of those two techniques (^) Docsity.com 2
Today’s Lecture
- To understand the role of programming languages in computing
- To understand the differences among low- & high-level, interpreted & compiled, and structured & object-oriented programming languages
Programming?
Types of
Programs?
Batch Programs
These are typically started from a shell (or automatically via a scheduler) and tend to follow a pattern of:
- Initialize internal data
- Read input data
- Process that data
- Print or store results
Key feature : No user interaction with the computer while the program is running
Examples?
Programming
Language?
A vocabulary and set of
grammatical rules for
instructing a computer to
perform specific tasks
Examples of
Programming
Language?
Machine Language Assembly Language (1956-63) LISP (1956) Fortran (1957) COBOL (1959) PL/1(1964) BASIC (1964) Pascal (1970) Smalltalk (1972) C (1972)
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Ada(1983)
C++ (1983-85)
QBasic (1986)
Perl (1987)
VisualBasic (1991)
PowerBuilder
Java (1995)
JavaScript
C# (2001) Docsity.com
Types of
Programming
Languages?
High level Programming
Languages
Low Level Programming
Languages