Information System:
Information System is a system that accepts data from internal and external sources as input, process it as information and communicates the processed information as output in an appropriate form.
Information System are very often computerized because of their ability to respond speedily to enqire in online or real time system update file as event occurs and control local area network.
Characteristics of good information
1. It should be clear to the user
2. It should be relevant for its purpose
3. It should be communicated using the appropriate channel
4. It should be timely
5. It should be sufficient for all purpose
6. It should be complete for its purpose.
Functions and value of information system:
The main function of information system is planning of events, decision making and control that leads to increase efficiency and reduce cost.
When there is effective and comprehensive information, when the information is made to have value, this will make information to be used for its purpose.
Information Technology
Information Technology is a term which generally covers the harnessing of electronic technology for the information needs of business at all levels.
Information Technology also embrace the use of interactive view data base system such as in Telecommunications. Such system are termed because once information has been accessed and displayed on the screen, the user can assess the information.
Application of Information Technology in Information System:
The tthree major application of Information Technology in Information System are:
1 Office support system
2 End user system
3 Data or transaction processing system
1. Office support system: Information Technology can be used in the office to enrich jobs, process data to balance the accounts in business organizations. It's also used in schools to process examination questions and results.
2. End user system: Information Technology performs variety of purpose for the end user. The applications include
* computerized information system
* decision support system
* computerized control system
3. Data transaction processing system: It can be used for reservation of seat in airlines, getting stock market quotation. It can be used for file processing and also for remote banking, home shopping, holiday and electronic booking. It is equally good for electronic commerce by the use of network and office automation equipment.
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