1. Use-Case Diagram Railroad Ticket System credit card companies railroad Maintain schedules passenger purchase ticket

2. Use-Case Diagram Newspaper Delivery System maintain subscriptions cancel for vacations produce bills produce daily lists delivery person produce summary report manager customer accept payment

3. Use-Case Diagram Student Registration System billing system student register for classes Admission and records departments generate classlists

4. Use-Case Diagram Video System vendors place video in system become a member rent a video return a video employee customer update/remove members set video type/price manager produce reports update/remove videos

5. Use-Case Diagram Safehome-- Non-embedded System accept commands homeowner setup system sensors alarm monitor status security company

6. Use-Case Diagram Safehome -- Embedded System accept commands keypad setup system sensors alarm display monitor status telephone line

7. Use-Case Diagram Simplified Inventory System determine reorders Purchasing Department shop floor workers check out parts vendors parts are received Accounting Department