According to some experts in information systems management (Effy Oz, 2009), an
information system (IS) is a computer-based set of hardware, software, and telecommunications
components, supported by people and procedures, to process data and turn it into useful
information. An IS consists of all the components that work together to process data and produce
information. Almost all business information systems consist of many subsystems with subgoals,
all contributing to the organization’s main goal.
Information system is the study of complementary networks of hardware and software that
people and organizations use to collect, filter, process, create, and distribute data. The study
bridges business and computer science using the theoretical foundations
of information and computation to study various business models and related algorithmic processes
within a computer science discipline. Computer Information System (CIS) is a field studying
computers and algorithmic processes, including their principles, their software and hardware
designs, their applications, and their impact on society while IS emphasizes functionality over
design.
Chapter 2 IS, IT and Comp Users Eng. Comm. via IT System (2/58) Watchara Phothisorn Page 2.2
The history of information systems coincides with the history of computer science that
began long before the modern discipline of computer science emerged in the twentieth
century. Regarding the circulation of information and ideas, numerous legacy information systems
still exist today that are continuously updated to promote ethnographic approaches, to ensure data
integrity, and to improve the social effectiveness and efficiency of the whole process. In general,
information systems are focused upon processing information within organizations, especially
within business enterprises, and sharing the benefits with modern society.