VHDL is a powerful and versatile language and offers numerous advantages:
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Design Methodology:
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VHDL supports many different design methodologies
(top-down, bottom-up, delay of detail) and is very flexible in its
approach to describing hardware.
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Technology Independence:
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VHDL is independent of any specific
technology or process. However, VHDL code can be written and then
targeted at many different technologies.
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Wide Range of Descriptions:
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VHDL can model hardware at various
levels of design abstraction. VHDL can describe hardware from the
standpoint of a "black box" to the gate level. VHDL also allows
for different abstraction-level descriptions of the same component
and allows the designer to mix behavioral descriptions with gate
level descriptions.
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Standard Language:
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The use of a standard language allows for easier
documentation and the ability to run the same code in a variety of
environments. Additionally, communication among designers and
among design tools is enhanced by a standard language.
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Design Management:
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Use of VHDL constructs, such as packages and
libraries, allows common elements to be shared among members of a
design group.
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Flexible Design:
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VHDL can be used to model digital hardware as well
as many other types of systems, including analog devices.
