Which term describes computers (e. g., Windows PC, macOS) with applications that allow a person to perform diverse tasks, from writing a book on CompTIA A+ certification to talking with someone, with full audio and video, on the other side of the world?

Solution:

The term to describe such computers is - Application Computers

Explanation:

Application program is run on the computer system that allows the users to perfrom various functions onto computer. In order to run the applications, every computer system requires an operatin system onto the computer. Application softwares includes all the softwares such as word processors, internet browsers, and all the database programs. Applications on compter can also be run simultaneously. E-mails and other utilities are applications itself.

the omega button is one of them.