High Level Language in Computer

BASIC.It is an abbreviation for Beginners All-purpose Symbolic Instruction Code.It is a very simple and easy language.It is suitable for scientific computations.But it is not as powerful as FORTRAN. It was introduced in 1965 by Dartmouth College.It is a widely used language for simple computation and analysis.It is now by far the most popular high-level language used in personal computers.To translate BASIC instruction into machine-language codes interpreters are frequently used in PC systems.But BASIC language compilers are also available for these systems.

The latest  version of BASIC  is QBASIC.It was developed by Microsoft.It replaced the earlier version of BASIC,which was called GWBASIC,QBASIC provides graphical user interface (GUI).It is provided with an intelligent editor interpreter,which checks syntax as the program line by line.In QBASIC it is not necessary to assign statement number to each and every statement numbers are assigned where it is necessary.

Visual BASIC was introduced in 1991 by Microsoft.It is a powerful tool for developing Windows applications(GUIs) in BASIC.Earlier,Windows applications were developed in C Language.The development of DOS applications.Programmers had too much worry about,such as what the mouse was doing,where the user was inside a menu,and whether the programmer was clicking or double clicking at a given place.Development of Windows application needed expert C Programmers and hundreds of lines of codes for the simplest task.Even the experts were facing problems.

Visual BASIC made the development of Windows applications an easy task.It is now used to develop Graphical User Interfaces (GUIs).It is is a scripting language to combine small programs written in BASIC.It allows to add menu,text boxes,command buttons,options buttons (for making exclusive choices),check boxes(non-exclusive choices),list boxes,scroll bars,and file and directory boxes.One can use grid to handle tabular data,communicate with other Windows applications and access databases.One can have multiple windows on the screen.Visual Basic has some features of OOP.