Pascal Programming Essay

1444 words - 6 pages

Pascal programming language was designed in 1968, and published in 1970. It is a small and efficient language intended to encourage good programming practices using structured programming and data structuring. Pascal was developed by Niklaus Wirth. The language was named in honor of the French mathematician and philosopher Blaise Pascal. In 1641, Pascal created the first arithmetical machine. Some say it was the first computer. Wirth improved the instrument eight years later. In 1650, Pascal left geometry and physics, and started his focus towards religious studies. A generation of students used Pascal as an introduction language in undergraduate courses. Types of Pascal have also frequently been used for everything from research projects to PC games. Niklaus Wirth reports that a first attempt to merge it in Fortran in 1969 was unsuccessful because of Fortran's lack of complex data structures. The second attempt was developed in the Pascal language itself and was operational by mid-1970. A generation of students used Pascal as an introductory language in undergraduate courses. Pascal, in its original form, is a Procedural language and includes the traditional like control structures with reserved words such as IF, THEN, ELSE, WHILE, FOR, and so on. However, Pascal has many data structuring and other ideas which were not included in the original, like type definitions, records, pointers, enumerations, and sets. The earliest computers were programmed in machine code. This type of programming is time consuming and error prone, as well as very difficult to change and understand. Programming is a time-consuming a process. More advanced languages were developed to resolve this problem. High level languages include a set of instructions that read like English, but can be translated by a program called a compiler into machine code. Pascal is a language that does that.
Pascal provides data structures, including both the enumerated and record data types, and defined with a pleasing appeal. One of the more popular Pascal programs of the 1970's and early 1980's was UCSD Pascal on the UCSD P-System operating system. The UCSD P-System was developed at the Institute for Information Studies at the University of California in San Diego, under Kenneth Bowles. In 1978, Richard Gleaves and Mark Allen, working on campus in San Diego, used UCSD Pascal to develop the 6502 interpreter which became the base for Apple Pascal. By the 1980's, Pascal was being used by most universities to teach programming, while still selling in the commercial markets. It became so popular that even Fortran began to change, taking advantage of Pascal's ideas. Because of the popularity of the Pascal language in system and application software, and in response to the many drawbacks of the original Pascal implementation, an extended Pascal was created to address the needs of commercial improvement. Along with extended Pascal, in 1986, Apple Computer released the first Object Pascal...

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