Elements of use case diagram: Actor. â¢ Actor is someone interacting with use case. (system function). Named by noun. â¢ Similar to the concept of user, but. a user can play different roles; (example: a prof. can be instructor and. researcher â plays 2 roles with two systems). â¢ Actor triggers use case. â¢ Actor has responsibility toward the system (inputs), and Actor have expectations from the system (outputs).
Related Manuals for Lenovo Laptop. Summary of Contents for Lenovo Laptop. Page 1: User Guide Lenovo User Guide Read the safety notices and important tips in the included manuals before using your computer. Page 2 Notes â¢ Before using the product, be sure to read Lenovo Safety and General Information Guide first.
AMD Processor Technology. Designed to work perfectly with Microsoft Windows 8.1, the Lenovo C40 is fuelled with a high performing AMD processor. This 21.5 all-in-one takes surprisingly little space on your desk, counter, or entertainment center.enovo C40 All-in-One Accessories & Services. With its modern look and feel, the AccuType keyboard boasts flatter, slightly curved keys for greater comfort and accuracy when typing. The portable, ambidextrous Lenovo Wireless Laser Mouse is perfect for everyday use and while on-the-go.