How application Programs work
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How application Programs work
Application programs
are written in a text based computer language as mentioned in the section about
hardware and software. Once written, they are complied into a binary language
the computer understands. The application programs use function calls (as
described in the section about operating systems) to interface to the various
computer peripherals such as your keyboard, mouse, screen , printer and other
devices. Most of these function calls are provided by the operating system so
the application programs are usually complied for a specific operating system
such as Microsoft Window 2000, Microsoft Window XP, or Microsoft Window 7 and
Microsoft Window 8.
Application Problems
An application program is a computer program. It is written
by human programmers who make mistakes. Therefore there can be errors in the
code even though there may be some testing before the product is released. Application
programs very widely in the quality of the code. Errors in code are referred to
as ‘bugs’. Bugs can cause unpredictable result including system crashes,
inability to perform expected functions, or providing an exploit for an
attacker who wants to again control of your system.
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