11/21/2022 0 Comments Real time operating system![]() Targeted for residential and business users interacting with PCs through a graphical user interface, the Microsoft Windows operating system helped drive the personal-computing era. In the 80s, Microsoft introduced the Windows operating system, which emphasized the personal computing environment. Eventually, UNIX was ported to all types of machines, from microcomputers to supercomputers. multi-user access was very efficient: one user could print files, for example, while another wrote programs. UNIX allowed many users performing a variety of tasks to share these large and costly computers. In the 60s and 70s, when mid-sized and mainframe computing was in its prime, UNIX was developed to facilitate multi-user access to expensive, limited-availability computing systems. These ranged from general-purpose operating systems (GPOS), such as UNIX and Microsoft Windows, to smaller and more compact real-time operating systems, such as VxWorks. Over the years, many versions of operating systems evolved. In addition, the evolution of operating systems helped shift the design of software applications from large, monolithic applications to more modular, interconnected applications that could run on top of the operating system environment. Obviously, these systems were difficult and costly to maintain.Īs the software industry progressed, operating systems that provided the basic software foundation for computing systems evolved and facilitated the abstraction of the underlying hardware from the application code. A small change in the hardware might result in rewriting much of the application itself. This tight integration between the software and hardware resulted in non-portable applications. In the early days of computing, developers created software applications that included low-level machine code to initialize and interact with the system's hardware directly. ![]()
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