Most important element in computer-based information systems

Computer Based Information System (CBIS) is an information system in which the computer plays a major role. Such a system consists of the following elements:

Hardware: The term hardware refers to machinery. This category includes the computer itself, which is often referred to as the central processing unit (CPU), and all of its support equipment’s. Among the support equipment’s are input and output devices, storage devices and communications devices.
Software: The term software refers to computer programs and the manuals (if any) that support them. Computer programs are machine-readable instructions that direct the circuitry within the hardware parts of the Computer Based Information System (CBIS) to function in ways that produce useful information from data. Programs are generally stored on some input / output medium-often a disk or tape.
Data: Data are facts that are used by program to produce useful information. Like programs, data are generally stored in machine-readable from on disk or tape until the computer needs them.
Procedures: Procedures are the policies that govern the operation of a computer system. “Procedures are to people what software is to hardware” is a common analogy that is used to illustrate the role of procedures in a CBIS.
People: Every Computer Based Information System (CBIS) needs people if it is to be useful. Often the most over-looked element of the CBIS is the people: probably the components that most influence the success or failure of information system.

Types of Computer Based Information Systems

1. Transaction Processing Systems

The most fundamental computer based system in an organisation pertains to the processing of business transactions. A transaction processing system can be defined as a computer based system that captures, classifies, stores, maintains, updates and retrieves transaction data for record keeping and for input to other types of CBIS. Transaction Processing Systems are aimed at improving the routine business activities on which all organizations depend. A transaction is any event or activity that affects the whole organisation. Placing orders, billing customers, hiring of employees and depositing cheques are some of the common transactions. The types of transactions that occur vary from organisation to organisation.

But this is true that all organisations process transactions as a major part of their daily business activities. The most successful organisations perform this work of transaction processing in a very systematic way. Transaction processing systems provide speed and accuracy and can be programmed to follow routines without any variance.

2. Management Information System

Data processing by computers has been extremely effective because of several reasons. The main reason being that huge amount of data relating to accounts and other transactions can be processed very quickly. Earlier most of the computer applications were concerned with record keeping and the automation of routine clerical processes. However, in recent years, increasing attention has been focused on computer applications providing information for policy making, management planning and control purposes. Management Information System are more concerned with management function. MIS can be described as information system that can provide all levels of management with information essential to the running of smooth business. This information must be as relevant, timely, accurate, complete and concise and economically feasible

3. Decision Support Systems

It is an information system that offers the kind of information that may not be predictable, the kind that business professionals may need only once. These systems do not produce regularly scheduled management reports. Instead, they are designed to respond to a wide range of requests. It is true that all the decisions in an organisation are not of a recurring nature. Decision support systems assist managers who must make decisions that are not highly structured, often called unstructured or semi-structured decisions. A decision is considered unstructured if there are no clear procedures for making the decision and if not all the factors to be considered in the decision can be readily identified in advance. Judgement of the manager plays a vital role in decision making where the problem is not structured. The decision support system supports, but does not replace, judgement of manager.

4. Office Automation Systems

Office automation systems are among the newest and most rapidly expanding computer based information systems. They are being developed with the hopes and expectations that they will increase the efficiency and productivity of office workers-typists, secretaries, administrative assistants, staff professionals, managers and the like. Many organisations have taken the First step toward automating their offices. Often this step involves the use of word processing equipment to facilitate the typing, storing, revising and printing of textual materials. Another development is a computer based communications system such as electronic mail which allows people to communicate in an electronic mode through computer terminals. An office automation system can be described as a multi-function, integrated computer based system that allows many office activities to be performed in an electronic mode.

Categories of different information systems with their characteristics have been described briefly in table below.

Category of Information System	Characteristics
Transaction Processing System	Substitutes computer-based processing for manual processes. Includes record-keeping applications.
Management Information System	Provides input to be used in the managerial decision process. Deals with supporting well structured decision situations. Typical information requirements can be anticipated
Decision Support System	Provides information to managers who make judgements about particular situations. Supports decision makes in situations that are not well structured.
Office Automation System	It is a multi-function, integrated computer based system, that allows many office activities to be performed in an electronic mode.

Systems Management

Computer Based Information Systems (CBIS) : What is CBIS, what its components are and which component is the most important. 1.0 Introduction

A Computer Based Information System is an organised integration of hardware and software technologies and human elements designed to produce timely, integrated, accurate and useful information for decision making purposes. It is the combination of people, hardware, procedure, software and data which make up a computerized system that can interprete data into useful informations, developed by the people and for the people. A CBIS is an information system in which the computer plays a major role and the data is mostly collected, stored, and processed in digital format using computerized processes. Similarly, the information is delivered in digital format via computerized mechanisms. The objectives of this paper is to analyze what is Computer Based Information System (CBIS), what its components are and which component is the most important. There are five components in CBIS which is hardware, software, data, people and procedures. The components works together to form a computer based information system. People seems to be the most important component in CBIS.

2.0 Discussion 2.1 Components in CBIS 2.1.1 Hardware

Hardware consists of the physical components of a computer that performs the input, processing, storage, and output activities of the computer. The term hardware refers to machinery. This

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The computer age introduced a new element to businesses, universities, and a multitude of other organizations: a set of components called the information system, which deals with collecting and organizing data and information. An information system is described as having five components.

This is the physical technology that works with information. Hardware can be as small as a smartphone that fits in a pocket or as large as a supercomputer that fills a building. Hardware also includes the peripheral devices that work with computers, such as keyboards, external disk drives, and routers. With the rise of the Internet of things, in which anything from home appliances to cars to clothes will be able to receive and transmit data, sensors that interact with computers are permeating the human environment.
The hardware needs to know what to do, and that is the role of software. Software can be divided into two types: system software and application software. The primary piece of system software is the operating system, such as Windows or iOS, which manages the hardware’s operation. Application software is designed for specific tasks, such as handling a spreadsheet, creating a document, or designing a Web page.
This component connects the hardware together to form a network. Connections can be through wires, such as Ethernet cables or fibre optics, or wireless, such as through Wi-Fi. A network can be designed to tie together computers in a specific area, such as an office or a school, through a local area network (LAN). If computers are more dispersed, the network is called a wide area network (WAN). The Internet itself can be considered a network of networks.
This component is where the “material” that the other components work with resides. A database is a place where data is collected and from which it can be retrieved by querying it using one or more specific criteria. A data warehouse contains all of the data in whatever form that an organization needs. Databases and data warehouses have assumed even greater importance in information systems with the emergence of “big data,” a term for the truly massive amounts of data that can be collected and analyzed.
The final, and possibly most important, component of information systems is the human element: the people that are needed to run the system and the procedures they follow so that the knowledge in the huge databases and data warehouses can be turned into learning that can interpret what has happened in the past and guide future action.