A personal digital assistant is a hand-held computer, used mainly for storing and accessing personal information such as addresses, telephone numbers, and memos. The abbreviation PDA is also used. A lightweight, hand-held, usually pen-based computer used as a personal organizer. a PDA
a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc
A personal assistant, or personal aide, is someone who assists in daily personal tasks. For example, a businessman may have a personal assistant to help with his correspondence and run errands