| 摘要 |
The invention relates to method of designing a hardware and software system specification. The invention is characterised in that it comprises the following steps: services are defined and a use case is defined for each service; each use case is associated with at least one system start state, a user request and, for each start state, a system end state; operations are defined and, at the same time, a set of elementary operations is defined for each state, the aforementioned set corresponding to the response from the system at the time of entry into said state; the architecture of the system is specified, defining electronic control units and networks; and elementary operations are placed on the computers. The invention also comprises at least one of the following steps: the identification of data flows circulating over the networks according to the aforementioned placement; and the identification of the specification of the interfaces of the computers according to said placement. |
