How PDAs can be used to store and access information?

A data storage memory area, and an input/output device such as a keyboard and a touchscreen or a liquid crystal display (LCD) screen on which symbols, text or icons are displayed and, into which signals can be input and detected thereby providing a two way communications capability by which information can be stored in an retrieved from memory that is part of the personal digital assistant computer. Personal digital assistants can be used to store, display, and/or manipulate various personal information.