Business IS

Input - the capture or collection of raw data resources from within an organisation or from its external environment.

Processing - The conversion of raw input into a more appropriate and useful form.

Output - The transfer of processed information to the people or activities that will use it.

Feedback - Output that is returned to appropriate members of the organisation to help them refine or correct the input phase.

Formal Systems - Information Systems that rely on mutually accepted and relatively fixed definitions of data and procedures for collecting, storing, processing and distributing information.

Manual Systems - An information system that uses only paper and pencil technology and does not rely on computers.

Computer Hardware - the physical equipment used for the input, processing and output work in an information system.

Computer Software - Preprogrammed instructions that coordinate the work of computer hardware components to perform

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The major functions performed by business

Manufacturing and production, sales and marketing, finance and accounting, and human resource activities

The role of information systems within business organisations

To deal with internal organisation problems and to ensure their survival in a changing external environment

Examples of basic business systems

Manufacturing and production systems - the division of a business organisation that produces the firms goods or services.

Replicated - a central database that is duplicated at all other locations

Online

Several leading edge technologies in databases

Object-oriented database - stores data and processing instructions as objects that can be automatically retrieved and stored. Word processing, spreadsheets, payroll etc. A ROM chip contains the microcode or instructions that can be permanently recorded into the memory and this is usually done as a step in the computers manufacture.

Information Systems literacy - knowledge and hands-on facility with information technologies, a broadly based understanding of organisations and individuals from a behavioral perspective and a similar understanding of how to analyse and solve problems. Most important component is the operating system.

The generations of computer software

1.

Storage Technology - physical media for storing data and the software governing the organisation of data on these media. Grouping the data elements in the manner that most easily and efficiently delivers the solution

Occasions where files are still of more use in development than databases

Personal computers, very small organisations. There are many codes used in computing.

How the operating system functions

Acts as the chief manager of the computer system, allocating, scheduling, and assigning system resources and monitoring the use of the computer. the data is lost once the power is shut off. In small computers the CPU will be fitted onto a single logic chip while in larger systems it might be constructed from hundreds of separate chips containing specialised circuits.

Common topics in this essay:
Information Systems, Bit Previous, WORM Write, Wide Web, FORTRAN COBOL, CPU Magnetic, Information System, Network Physical, UNIX Applications, Database File, information systems, information system, data stored, systems software, sales marketing, approximately 1, computer hardware, secondary storage, software programs, applications software, systems division business, 'data' primary memory, physical media software, division business organisation, stored means magnetized,

Approximate Word count = 2257
Approximate Pages = 9 (250 words per page double spaced)

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