example, real-time control systems, message-switching systems, software engineering environments, or personal computing systems. [Computer and Information Sciences] 
n., A computer hardware and software system designed to accept, store, manipulate, and analyze data and to report results, usually on a regular, ongoing basis. An IS usually consists of a data input subsystem, a data storage and retrieval subsystem, a data analysis and manipulation subsystem, and a reporting subsystem. [Computer and Information