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.
A file with the 7Z file extension is a 7-Zip Compressed file. Other types of files may also use the 7Z file extension. If you know of any additional file formats that use the .7Z extension, please let me know so I can update this information.
The .Z (capital Z) file extension is not the same as the .z (lowercase z) file extension. Files that end with the extension .Z are normally Unix compressed. To uncompress them, use the appropriate program from the following table: compress (enter uncompress filename.Z, where filename is the name of your file) compress (enter uncompress filename.Z, where filename is the name of your file)