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. |02.05 - Semantic gap .
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The programming language is generally perceived as
the method of computer algorithm notation. To let the
computer process a task it's necessary to enter
instructions sequence. This instructions sequence is
commonly called as an algorithm. The sequence of
instructions expressed in programming language is
called program.
In current computers heart of all the calculations
is the processor. It processes the instructions
in assembly language. The construction of advances
algorithms in assembler is quite difficult. The
reason is principle of the processor construction.
The processor can work only in binary number system
and can process only several basic operations.
Instructions in assembler consists only from the
operation and binary representation of the value
stored in the computer memory.
There is a semantic gap between the assembler
language and human thinking. The gap can be
crossed by programming languages introduction.
There is a vast amount of programming language
dialects and it differs in the complexity. The
complexity of programming language is the bigger
the closer is to the human cognition. The meaning
of higher programming languages is to offer the
most understandable and most powerful programming
environment. The higher programming languages achieve
that by more complex construct implementation and
different abstraction of the data structures.
The way that enables computer to understand the
higher languages is the existence of so-called
compiler. Compiler translates program from the
programming language to the assembler language.
