A: 4K â also known as UHD (more on this in the next answer!) â is a picture technology that quadruples the number of pixels found in a full HD picture. These pixels are usually arranged in a 3,840 x 2,160 configuration, compared with the 1920x1080 you get in a full HD TV.
Files with the .7z extension are very similar to Zip files. These files are compressed archive files, usually created by the 7-Zip file archive utility. 7Z files can make it easier to send files and folders over email and the Web.
Windows 7 and File Management. OVERVIEW. Windows 7 is the newest operating system software released by Microsoft. The. operating system software controls the operations of the computer and works with. the application software. Windows 7 works with Word in opening, printing, deleting, and saving files.