Visual Programming Languages

The way Visual Programming Language programmers have written applications for many years has changed dramatically and the amount of knowledge needed to create applications and use them has changed dramatically. In the 1950's, computers were machines occupying the entire room space, requiring millions of dollars of expense and processing capacity compared with modern calculators. Technicians need extensive knowledge of electrical and mechanical parts, as well as specific combinations of switches, to produce mainframe responses.

Most programming languages ​​are text based, but there are also many vision based programming languages. A vision-based programming language is a language in which programs can be created by manipulating visual elements such as drag-and-drop blocks, not text-based programming languages ​​that can write lines and lines of code to create programs. The Hello World program describes the general differences between Scratch (visualization-based programming language) and C ++ (text-based programming language).

Microsoft Visual Basic is a simpler and simpler programming language than other programming languages ​​such as Java, C programming, C ++ programming. Visual Basic is the ideal language for developing Windows-based databases and Internet applications. Windows based applications are event driven and require the support of a superior graphical user interface (GUI). Internet applications require web programming support. Visual Basic provides a scripting language called VBScript. It supports web page control and interaction. You can also use Visual Basic to access databases created using database management software (DBMS) such as Access 2000, SQL Server 5, FoxPro. Visual Basic also supports traditional process-oriented programming and modern object-oriented programming (OOP).

Since its introduction in 1990, the Visual Basic approach has become the standard for programming languages. There are many visualization environments for programming languages ​​such as C, C ++, Pascal, and Java. Visual Basic is sometimes referred to as Rapid Application Development (RAD) system to enable programmers to build prototype applications quickly. Although Java is an object-oriented language similar to C ++, it is simplified to eliminate language features that cause common programming errors. The Java source code file (the file with extension .java) is compiled into a form called bytecode (file with .class extension) and then executed by the Java interpreter. Because the Java interpreter and runtime environment (called Java Virtual Machine (VM)) is suitable for most operating systems, including UNIX, Macintosh OS, and Windows, compiled Java code can run on most computers . Bytecodes can also be converted directly into machine instructions by just-in-time compiler (JIT).