Computer Software
An instruction may also invoke one of many input or output operations, for example displaying some text on a computer screen; causing state changes which should be visible to the user. The processor executes the instructions in the order they are provided, unless it is instructed to "jump" to a different instruction, or is interrupted by the operating system. In 1984, Apple introduced the Macintosh computer, featuring an operating system with a graphical user interface. Though not the first graphical operating system, it was the first one to find commercial success. This version of Windows was not an operating system, but instead was an application that ran on top of the DOS operating system, providing a graphical environment. Design And Implementation In open systems, organizations want portability, scalability, and interoperability of applications software. Batch processing Processing programs or transactions in batches, without a user's interaction. Operating syst