Many embedded systems have different design constraints. Design culture dysfunction make design difficult to be successfully applying tools to embedded system . Integration of system design is increased. Due this there is a widening gap in size and complexity of chip-level deign and design capabilities. To bridge this gap in design productivity a number of advances have been made in high-level modeling and validation. Specifically advances have been made in ‘Abstraction and Reuse ` and ‘ Structured design methods `. Structured design methods are Component-Based Design and Platform Based Design. There are many trends for design embedded system. Out of that highly programmed platform and UML for embedded software development are recent one. In unified embedded system development methodology, these two can be combined. Though these two concepts are powerful in their own right, their combination magnifies the effective gain in productivity and implementation.
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