Question

question 9 (1 point)
personal digital assistants most commonly use which of these technologies?

1. optical scanning
2. pen - based computing
3. jump drives
4. back - lit keyboards

Explanation:

Personal digital assistants (like early PDAs) commonly used pen - based computing (stylus input). Optical scanning is for document scanning, jump drives are for storage transfer, and back - lit keyboards are for visibility in low light, not core to PDA interaction.

Answer:

1. Pen - based computing