I- DATA AND INFORMATION.
1- Definition of data and information
Data is a raw facts. Data can be used in the form of number, characters, symbols, picture or sounds.
Information is data that is organized and meaningful. It's used for making decision.
Data is used as input for processing and information is used as output of the processing.
Ex: Data: words, images, numbers.
Information: purpose, meaning process.
2- Data integrity.
Garbage in, garbage out ( GIGO) computer phrase that means you can't create correct information for incorrect data.
3- Quality of valuable information.
4- Role of information.
Information is used in decision making, to influence and persuade.
Information can be a capital resource, especially for
companies that produce information-based products and services.
II- THE ECONOMIC OF INFORMATION AND IT
1- The economic of information and IT.
information has two basic elements.
Reach means the number of people.
Richness means amount of quality information share in transaction. It has three component: bandwith, customization and interactivity.
How do computer represent data? A bit is the most basic unit of information in a computer. they are 0 and
2- Computer operations.
A computer converts data ( from input ) to become information ( as output).
Basic operation that a computer can perform are input, processing, output, storage and communication.
3- Explain the economic of information
Now,
no such tradeoff is required. Everyone is able to have incredibly rich
communication with everyone else BECAUSE
of
- Connectivity: the Internet,
- Standards: Web standards, Internet standards,
Application Standards, Database standards,
etc.
4- What is input?
is any data and instructions entered into the memory of a
computer – can be in the form of programs or commands, and user responses
5- What is output?
Output is an data that has been processed into a useful form.
Output device is any kind of hardware component that conveys information to one or more people.
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