At first glance, it may appear that the PS4's user interface shares little in common with the PlayStation 3's "XrossMediaBar" interface, a familiar sight for owners of Sony's 2006-era televisions.

Operating systems have many functions ... It is allocated pages 2, 3 and 4. Program A now closes, and Program C now runs. Program C requires three pages. Pages 0 and 1 are now free, so Program ...

Fortunately, switching to a lightweight operating system can provide better performance if you’re rocking an old PC. So, here ...

Originally most interfaces were CLIs, and they still exist within modern operating systems, for example the command prompt app in Windows, and Terminal in OS X.