Final answer:
PDA stands for Personal Digital Assistant, not Professional Diagnostic Assistant. It was a precursor to the smartphone.
Step-by-step explanation:
False, PDA is an abbreviation for Personal Digital Assistant, not Professional Diagnostic Assistant. PDAs were handheld devices that functioned as portable personal computers with a variety of features including calendar, note-taking, and internet connectivity. They were precursors to modern smartphones and have largely been supplanted by them.