Desktop Operating Systems are software that manage computer hardware and provide a platform for running applications on personal computers. They enable users to interact with the computer through a graphical user interface (GUI), making tasks like file management, internet browsing, and application usage more intuitive. Popular examples of Desktop Operating Systems include Windows, macOS, and various distributions of Linux. Each of these systems offers unique features and user experiences, catering to different preferences and needs. Understanding these systems is essential for anyone looking to effectively use a personal computer.