VISUAL BASIC is a high
level programming language evolved from the earlier DOS version
called BASIC. BASIC means Beginners' All-purpose Symbolic
Instruction Code. It is a fairly easy programming
language to learn. The codes look a bit like English Language.
Different software companies produced different version of BASIC,
such as Microsoft QBASIC, QUICKBASIC, GWBASIC ,IBM BASICA and so on.
VISUAL BASIC is a VISUAL and events driven
Programming Language. These are the main divergence from the old
BASIC. In BASIC, programming is done in a text-only environment and
the program is executed sequentially. In VISUAL BASIC, programming
is done in a graphical environment. Because users may click on a
certain object randomly, so each object has to be programmed
independently to be able to response to those actions (events).
Therefore, a VISUAL BASIC Program is made up of many subprograms,
each has its own program codes, and each can be executed
independently and at the same time each can be linked together in
one way or another. (For
source of Definition, click here).
