A start-to-finish design project involves several stages that must be performer in sequenct to provide the most effective results. As each design is different, the time sent in the various stages will, of course, vary. For instance, design of an experimental sensing technology will likely require more research effort than the design of, say, a standard motor control. Likewise, a miniaturized consumer product will require more ffort in the pcb layout stages due to the highly compacted component layout.
Each design begins with a research effort to confirm the feasibility of the desired results. This research may include suitability of the chosen technology to produce the desired final product functionality, the ability to reach a target per-unit price point, or even the likelihood of achieving the desired results within the available time frame.
Once all are satisfied that there is a reasonable chance of meeting all design objectives, a work flow schedule is created.