Information System: Lecture # 2
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Lecture # 2
INFORMATION SYSTEM
THE COMPONENTS OF AN INFORMATION SYSTEM
INPUT Activity
of gathering and capturing raw data. E.g. student grading system
Input
Input
can take many form. Name, roll#
can be a manual or automated process. Barcode reader reads and put items and price in computerized cash register
PROCESSING Involves
converting or transforming data into useful outputs.
Can
involves making calculations, making comparisons and taking alternative actions and storing data 4 future use.
Processing
can be done manually or with computer assistance.
OUTPUT Involves
producing useful information, in the form of documents and reports.
Output
can be producing in a variety of way.
FEED BACK Is
output that is used to make changes to input or processing activities.
Error
or problem might make it necessary to correct input or change a process.
200
grade point instead of 20. Feed back is important for mangers and decision makers
TYPES OF INFORMATION SYSTEMS Two types of information system
Manual information system Computer-Based Information Systems (CBIS)
MANUAL INFORMATION SYSTEM
Basically a manual-based information system is one that does not rely on any computerized systems and a computerbased information system does. A manualbased system will see information recorded and kept in different ways such as in files in paper form
COMPUTER-BASED INFORMATION SYSTEMS (CBIS)
COMPONENTS OF A CBIS
Hardware - computer equipment used to perform input, processing, and output activities.
Software - computer programs that govern the operation of the computer.
Database - an organized collection of facts and information, typically consisting of two or more related data files.
People - the most important element in most computer-based information systems.
Procedures - include the strategies, policies, methods, and rules for using the CBIS
TELECOMMUNICATIONS, NETWORK, AND THE INTERNET Telecommunications - the electronic transmission of signals for communications.
Networks - used to connect computers and computer equipment in a building, around the country, or around the world to enable electronic communications.
Internet - the world’s largest computer network, actually consisting of thousands of interconnected networks
SUMMARY
Data - raw facts Information - data transformed into a meaningful form Systems development - creating or modifying existing business systems Organization - a formal collection of people and various other resources established to accomplish a set of goals
INFORMATION SYSTEM
THE COMPONENTS OF AN INFORMATION SYSTEM
INPUT Activity
of gathering and capturing raw data. E.g. student grading system
Input
Input
can take many form. Name, roll#
can be a manual or automated process. Barcode reader reads and put items and price in computerized cash register
PROCESSING Involves
converting or transforming data into useful outputs.
Can
involves making calculations, making comparisons and taking alternative actions and storing data 4 future use.
Processing
can be done manually or with computer assistance.
OUTPUT Involves
producing useful information, in the form of documents and reports.
Output
can be producing in a variety of way.
FEED BACK Is
output that is used to make changes to input or processing activities.
Error
or problem might make it necessary to correct input or change a process.
200
grade point instead of 20. Feed back is important for mangers and decision makers
TYPES OF INFORMATION SYSTEMS Two types of information system
Manual information system Computer-Based Information Systems (CBIS)
MANUAL INFORMATION SYSTEM
Basically a manual-based information system is one that does not rely on any computerized systems and a computerbased information system does. A manualbased system will see information recorded and kept in different ways such as in files in paper form
COMPUTER-BASED INFORMATION SYSTEMS (CBIS)
COMPONENTS OF A CBIS
Hardware - computer equipment used to perform input, processing, and output activities.
Software - computer programs that govern the operation of the computer.
Database - an organized collection of facts and information, typically consisting of two or more related data files.
People - the most important element in most computer-based information systems.
Procedures - include the strategies, policies, methods, and rules for using the CBIS
TELECOMMUNICATIONS, NETWORK, AND THE INTERNET Telecommunications - the electronic transmission of signals for communications.
Networks - used to connect computers and computer equipment in a building, around the country, or around the world to enable electronic communications.
Internet - the world’s largest computer network, actually consisting of thousands of interconnected networks
SUMMARY
Data - raw facts Information - data transformed into a meaningful form Systems development - creating or modifying existing business systems Organization - a formal collection of people and various other resources established to accomplish a set of goals
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