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Apply requirements planning in embedded system design (Part 2)

Posted: 13 Dec 2010     Print Version  Bookmark and Share

Keywords:embedded systems  requirements document  electronic alarm clock 

This six part tutorial takes you step by step through development of an embedded systems design requirements document for a seven-digit electronic alarm clock. Part 2 is focused on communications and timing requirements. The next area of information to extract from the requirements document relates to communication pathways, both within the system and between the system and any external systems—specifically, information concerning the volume and type of data that will have to be handled by each pathway.

This gives the designer a basis to plan out the communications system and to estimate the necessary data memory space required. Some of this information will be specified in the form of communications protocols between the system and external entities such as terminals, remote systems, or autonomous storage. Some of the information will be dictated by the operation of the peripherals in the system, such as timers, A-to-D converters, and the system's displays.

View the PDF document for more information.





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