Pascal is one of the 'old' computer languages.
In the old days people programmed for character based systems (think of Linux or old MS-DOS.
For these the most popular programming languages were Basic, Pascal and Cobol.
Pascal was one of the first using a graphic interface (by the Borland company) to program.
For database programming there was Dbase.
In this time programming looked a lot like scripting.
Once Windows became popular the programming languages were re-developed to become object-orented.
C# and C++ were made based on Cobol, and Basic more or less grew in to this.
In Visual Studio the differences between Visual Bacis and Visual C++ are becomming less and less.
Borland tried to from Pascal in to Delphi, but it was too late to keep their market share.
With the C programming being the most platform independent it has become the most popular programming, in different varieties.