ISBN : 978-81-963532-2-3 (E-Book) Example:StructurechartfortheRMS software Forthisexample,thecontextdiagramwasdrawnearlier. Todrawthelevel1DFD(fig.11.1),fromacursoryanalysisoftheproblemdescription, we can see that there are four basic functions that the system needs toperform – accept the input numbers from the user, validate the numbers, calculate therootmean squareof theinput numbers and, then displaythe result. Fig.11.1:Level1DFD By observing the level 1 DFD, we identify the validate-input as the afferent branch and writeoutputastheefferentbranch.Theremainingportion(i.e.compute-rms)formsthecentraltransform. By applying the step 2 and step 3 of transform analysis, we get the structure chartshownin fig.11.2. 51 Software Engineering Keerthana P, Manasa KN, Ganga D Bengal
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