ABSTRACT
Design input provides the foundation for product development. The objective of the design input process is to establish and document the design input requirements for the device. Once the documentation describing the design and the organized approach to the design is complete, the actual design work begins. The block diagram is basically a flow chart of the signal movement within the device and is an aid to organizing the design. Individual blocks within the block diagram can be approached for component design, making the task more organized and less tedious. As certain portions of the design become firm, the job of selecting the proper components becomes a primary concern, especially where there are long lead times for orders. During design, one may need to deal with the problem of assessing the combined effects of multiple variables on a measurable output or other characteristic of a product, by means of experiments.
