After the product requirements and objectives are reviewed, the next step is to define the final product, that is, the product specification. The product definition in the product specification must be based on the product requirements and product objectives, and the functions in the specification cannot be spread at will. The bottom line must be established. Product changes must also be based on certain conditions, there are reasonable processing procedures. The following are some steps, methods, and precautions for product specifications: 1. Control Function spread:. establish a baseline: complete description of product B. permission from approvers C. maintenance control: force process change control 2. Baseline creation steps:. relationship between product specifications and product objectives B. relationship between high-level design and product specification C. relationship between prototype and Product Specification D. ROI 3. Mandatory conditions for controlling process changes. only necessary changes to the product B. c. changes should be implemented in an orderly manner. 4. Change control method.. change suggestion table B. recommended change status table (describe the impact scope, cost, and schedule required for the change) 5. The product specification must contain:. solution change B. deviation from Objective C. function D. hardware Support e. software support F. resource G. install H. performance I. publication J. standard k. compatibility/portability L. security M. others
