If you assign a task to the computer. It can only complete the
task if it can understand everything you want to say to
computer. If your words are signs that you use to deliver the
message to computer. The computer will not be able to fulfill
the requirement and cannot perform according to your
instructions. Contextual computing is the source for computer to
understand user and to deliver the best services according to
the instructions of the users. Dictionary definition of context
is it is the general situation of an idea that is associated
with that idea and helps that idea to be understood by people.
In Contextual computing the used context enables the computer to
understand the user and his situation for a proper output.
Various contextual computing techniques are working for
different fields of life like education, engineering, health-
care etc. Many applications have no use without contextual
computing like GPS devices used in Cars are useless without
proper direction guidelines - Top Emerging Technologi