Pre-Test: Music downloading has increased in part due to , subscription-based services that allow users to store files online and access them from computers and digital devices anywhere.

professionals can use many types of technology that can them. some examples are, computers (they research and can use for programs for data, they are also used for job applications, school work, and even to make new ideas), speedometers (can get data for unknown data), sometimes something as small as a pen (used for rough drafts, to insert data, and again job applications).

if you go to ask a question say ask, there should be something that looks like this. a camera lens.

that without the operating systems you would have to control and synchronize computer hardware.

answerrandom access memory (ram);