Which of the following is an example of a hand-held personal computer?

The choice of a PDA as an example of a hand-held personal computer is correct because Personal Digital Assistants were specifically designed to be compact and portable devices capable of managing daily tasks. They typically include functionalities such as scheduling, note-taking, and storing contacts. PDAs represent the early evolution of mobile computing, functioning much like computers but in a more handheld format.

The other options are not suitable examples of hand-held personal computers in the same context. An iPod primarily serves as a media player rather than a computing device, lacking the comprehensive functionalities associated with a personal computer. Similarly, an LCD refers to a type of display technology, which is not a computing device in itself. The option labeled ACB does not correspond to any known handheld computing device, making it irrelevant in this context. Therefore, the PDA stands out as the most accurate representation of a hand-held personal computer.