PDA Full Form is Personal Digital Assistant. PDA is a small handheld device which is capable of combining telephone/fax, computing, networking, and other Internet features. A PDA is multi functional. It can be a fax sender, a cell phone device, a personal organizer, and a web browser. Most often people call it the ‘hand held computer’ or ‘palmtop’ or ‘pocket computer’.
Unlike those mini and portable computers, PDAs were pen-based and used a stylus to key in the texts or inputs. They even had hand-writing feature and reacted to voice inputs with the help of voice recognition technology. Apple Computer was the first to offer PDAs in the form of Newton Message Pad in the year 1993. Soon other manufacturers followed the idea to offer similar products. However, the range of Palm Pilot PDAs were most popular.