Embedded Systems Architecture for Agile Development by Mohsen Mirtalebi

Author:Mohsen Mirtalebi
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA
Published: 2017-11-17T16:00:00+00:00

Figure 4-5The WBS in action, a top-down view of a system’s data-related functionalities

Process and Control Specification (PSPEC, CSPEC)

The PSPEC and CSPEC are developed when the work of decomposing flow diagrams through DFDs and CFDs are done. These two documents, PSPEC and CSPEC, show the functionality of each component and the relationships among them for the entire project where it leaves less to no ambiguity about the functionality, inputs, and outputs of a component. Hatley and Pirbhai [1] provide a useful graphical overview of data and control work breakdown structure. Figure 4-6 is a graph summarizing documents involving this process. There are various forms to express the PSPEC and CSPECs; one is structured English or Pseudo-Codes, or mathematical formulas, logical relationships, or a combination of all. The following is an example of a Pseudo-Code:

Figure 4-6The relationship between PSPEC and CSPEC

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