2. List at least three signal words the professor uses in the video. How did he use the signal words?

The forerunner to cell phones, pdas, and smartphones was

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.

Auniform resource locator (url) is a formatted string of text that web browsers, email applications, and other software programs use to identify a particular resource on the internet. true false