The direct purpose of an operating system is to

manages a computer's hardware as well as providing an environment for applications programs to run on.

Explanation:

1. Manages computer's resources

2.  establish a user interface

3. execute and provide services for application software

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).