Abstract Data Types

To enhance modeling efficiency and usefulness, VHDL supports the notion of abstract data types (ADT's)
Examples
- Queue data type
- Finite state machine data type
- Floating and complex data types
- Vector and matrix data types
An abstract data type consists of two things
- Data
- Operators that manipulate the data
ADT's are implemented in VHDL through the use of a set of components which operate in a consistent integrated data environment