How Well Do You Know English Slang?
by 1992, initialism for personal digital assistant.
Short for personal digital assistant. A lightweight, handheld computer, typically employing a touch-sensitive screen rather than a keyboard, generally used for storing information such as addresses or schedules. Many PDAs include handwriting recognition software, some support voice recognition, and some have an internal cell phone and modem to link with other computers or networks.
Public display of affection: It's uncomfortable to be an adult and see PDA at the mall