Sequence Diagrams

domicile apparatus control frame Sequence plat To operate the HAC System, drug utilizationr call for to operate each bag appliance all by direct contact or by a foreign control remains. Sequence diagram leave alone apologise the operation by a outside control placement. To splice to the remote system, user needs computer embedded conference devices such as a cell phone, a PDA, or a laptop computer. The Home appliance control system is controlled either by a cell phone or a by medal top or by a PC. They ar committed either through wireless application protocol (WAP), the Internet, or intranet. It controls various appliances such as a microwave, TV and so on The HACS system receives commands from remote devices that are manipulated by user. The system in turn dispatch commands to several(prenominal) appliances that will perform the actions. HACS is responsible for safekeeping track of the states of the devices. If something goes wrong, it will no tify the user by send messages back to the remote devices as well as nip department if necessary. The undermentioned picture gives an overview of how this system is going to work. [pic] 1 Authencetication [pic] issue of events: 1. after(prenominal) user connects the remote system, user needs to log on to the system using valid username and password. A logon attempt shall particular to 3 times for security precaution.

2. afterward all use of the system, user shall log out the system and communication amid user and remote system is disconnected. 2 melt down TV [pic] Flow of events: 1. After user log onto the system, remote system asks HACS dominance a itemization of appli! ances. 2. User scarcely chooses the TV from the appliance refer. 3. Remote system asks the command tip of a TV. 4. HACS restrainer asks a TV a list of commands. 5. A store door returns the list of commands to the HACS controller then HACS controller returns the list to the remote system, then remote system displays the command list 6. User...If you indispensability to get a full(a) essay, order it on our website: OrderEssay.net

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