Final answer:
A typical personal digital assistant (PDA) includes a calendar, which was a standard feature for managing personal information. PDAs were predecessors of smartphones, focusing on personal information management. They did not come with desktop-like peripherals such as external monitors or keyboards.
Step-by-step explanation:
A typical personal digital assistant (PDA) includes a calendar. PDAs were popular mobile devices before smartphones became prevalent. They were designed to help individuals manage their personal information, with features such as a calendar, address book, task list, and note-taking capabilities. While PDAs have been largely replaced by smartphones, they were an important step in the evolution of handheld computing devices. A PDA typically would not come with an external monitor, mouse, or a keyboard as part of its standard configuration. These components are more associated with desktop computers or laptops.