Processing with Programs 1. ITGS – Software Basic. Food for Thought: Recipe for food P recise steps How many steps. Processing with Programs 2. ITGS – Software Basic. Food for Thought: One step to explain many actions. Computers – fast, smart machines. ITGS – Software Basic.
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Applications designed specifically for a particular business or industry are called vertical-market or custom applications. (restaurant-management software, medical-billing software, school evidence software)
Cost far more then mass-market applications.
Utility programs serve as tools for doing system and repairs that aren’t automatically handled by the operating system.
Copy files, repair damaged data files, translate files to different programs, compress files, …
Operating systems invoke many utility programs
The first to market, the Macintosh was eclipsed in the GUI operating system. At the beginning MS Windows was a program (shell) that put graphical face on MS DOS. With Windows 95 MS transforming Windows from an operating system shell into full operating system.
Unix operating system developed at Bell Labs over a decade before the first PCs, enables a timesharing computer to communicate with several other computers or terminals at one time.
UNIX is command line, character-based operating system.
Operating systems need application software so they can do useful work.
Application software needs to be built to any kind of platform.
Platform is combination of hardware and operating system software.
Cross-platform applications (MS Office, Photoshop, are available in similar versions for multiple platforms.