COMPONENTS OF INFORMATION SYSTEMS
With the help of information systems, enterprises and individuals can use computers to collect, store, process, analyse, and distribute information. There are different types of information systems, i.e. Manual (paper and pencil) information system, Informal (word to mouth) information system, Formal (written procedures) information system and Computer based information system. This chapter mainly focuses on computer based information system. A Computer Based Information system is a combination of people, IT and business processes that helps management in taking important decisions to carry out the business successfully.
Information Systems are networks of hardware and software that people and organizations use to create, collect, filter, process and distribute data. Information Systems are interrelated components working together to collect, process, store and disseminate information to support decision-making, coordination, control, analysis and visualization in an organization.
Here, people mean the IT professionals i.e. system administrator, programmers and end users i.e. the persons, who can use hardware and software for retrieving the desired information. The hardware means the physical components of the computers i.e. server or smart terminals with different configurations like corei3/corei5/corei7 processors etc. and software means the system software (different types of operating systems
e.g. UNIX, LINUX, WINDOWS etc.), application software (different type of computer programs designed to perform specific task) and utility software (e.g. tools). The data is the raw fact, which may be in the form of database. The data may be alphanumeric, text, image, video, audio, and other forms. The network means communication media (Internet, Intranet, Extranet etc.).
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