Case Study 1 Facts: An operating system is a program that manages the computer hardware. It also provides a basis for application programs and acts as an intermediary between the computer user and the...

Extracted text: Case Study 1 Facts: An operating system is a program that manages the computer hardware. It also provides a basis for application programs and acts as an intermediary between the computer user and the computer hardware. An amazing aspect of operating systems is how varied they are in accomplishing these tasks. Mainframe operating systems are designed primarily to optimize the utilization of hardware. Personal computer (PC) operating systems support complex games, business applications, and everything in between. Operating systems for handheld computers are designed to provide an environment in which a user can easily interface with the computer to execute programs. Thus, some operating systems are designed to be convenient, others to be efficient, and others some combination of the two. An operating system is large and complex, it must be created piece by piece. Each of these pieces should be a well-delineated portion of the system, with carefully defined inputs, outputs, and functions. Question(s): By looking at the operating system's role in the overall computer system. 1. A computer system can be divided roughly into how many parts? 2. Explain a brief description of each part and its importance. 3. Is it still possible to be called a computer system one of them is missing?