Preliminary System Design
During this stage of the system lifecycle, subsystems that perform the desired system functions are designed and specified in compliance with the system specification. Interfaces between subsystems are defined, as well as overall test and evaluation requirements. At the completion of this stage, a development specification is produced that is sufficient to perform detailed design and development.
Key steps within the preliminary design stage include:
- Functional analysis
- Requirements allocation
- Detailed trade-off studies
- Synthesis of system options
- Preliminary design of engineering models
- Development specification
- Preliminary design review
Read more about this topic: System Lifecycle
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—For the State of Illinois, U.S. public relief program (1935-1943)