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The meaning of Data
Data and information are used interchangeably but they are quite different.
Consider this example: when a student is admitted at school he/she fills a form with details such as parents' names, date of birth, place of domicile, address, phone number and so on, those details are referred to as data.
When such data are used by the school authority then the school gets the information about a particular student.
Data can be defined as facts about something that can be used in calculating, reasoning or planning.
Data (Input) is a collection of unprocessed items, which can include text, numbers, images, audio, and video which are later processed into information
Information conveys meaning to users, it is also known as processed data (output)
Data is any collection of numbers, characters or other symbols that has been coded into a format that can be input into a computer and processed. Data on its own has no meaning or context.
It is only after processing by a computer that data takes on a context and becomes information.
Therefore information is an organized data which give meaningful sentence or statement.
Relationship of Data and Information
Data and Information are closely interrelated with each other.
SIMILARITIES BETWEEN DATA AND INFORMATION
Both data and Information can be presented in alphabets
Both data and information can be Presented in numerals
Both data and Information can be presented in symbols
DIFFERENCES BETWEEN DATA AND INFORMATION
DATA INFORMATION
i) data is a row fact that is unprocessed. i) information is data that has been processed
ii) data is the lower level of knowledge ii) Information is the second level of knowledge
iii) observation and recording are done to obtain data iii) The analysis is done to obtain information
The sources of Information
What is the source of information?
An information source is a person, thing, or place from which information comes, arises, or is obtained. That source might then inform a person about something or provide knowledge about it.
Information sources are divided into separate distinct categories, primary, secondary, tertiary, and so on. In simple words source of information means the origination of the message.
A) PRIMARY SOURCES OF INFORMATION
The primary source of information allows learners to access original and unedited information.
The primary source requires the learner to interact with the sources and extract information.
Examples: personal interview, E-mail, discussion, debate, meeting, survey, observation, etc.
B) SECONDARY SOURCES
Secondary sources are edited primary sources, second-hand versions. They represent someone else's thinking.
Example Books, Encyclopedia, DVD's magazines, newspapers, videotape, audiotape, TV, internet, website. etc.
C) TERTIARY SOURCES
These sources are intermediate between primary and secondary sources.
For example someone may read a newspaper and pass the information to others through various means.
The importance of Information
Computers were originally used by scientists for calculating numbers, and have gradually become useful in offices and industries.
In recent times, simplified models that can be used by almost everybody have become common in schools and homes for accomplishing many varied tasks and applications.
Lists the uses that computers are now commonly put to writing letters, and reports, printing books, newspapers, and magazines, drawing pictures and diagrams, doing statistics, mathematics and handling financial records, controlling traffic lights, flying airplanes, making and playing music and video, sending messages anywhere in the world.
Internet The Internet is a global collection of many types of computers and computer networks that are linked together.
It is increasingly becoming the solution to much information, problems, information exchange, and marketing that describes the Internet as a mixture of many services with the two most commonly used being electronic mail (e- mail for short) and the World Wide Web (www).
It plays a significant role in education, health, political processes, agriculture, economy, businesses and newsgroups.
With Internet connectivity, one can do business all over the world without physical contact with the buyer or the need for a business intermediary.
E-mail Electronic mail (e-mail) is the exchange of text messages and computer files transmitted via communications networks such as the Internet.
The e-mail system as the equivalent of postal mailing services, with the biggest difference being the time and cost involved.
And not only written data, but all sorts of information in the form of video, audio, or photographs, can be sent via e-mail.
E-mail as an increasingly popular method of communication, especially in the workplace.
Mobile phones are a telephone system that can move or be moved easily and quickly from place to place.
Mobile phones were once the tool of rich and busy executives who could afford both the luxury. Mobile phones are now the ICT that is reshaping and revolutionizing communications globally.
Its impact on the economic activities of nations, businesses, and small entrepreneurs is phenomenal.
The availability of this new technology has been reshaping the material basis of the society as well as bringing about a profound restructuring of economic, political, and
cultural relations among states.
In summary, information is important because:
It creates awareness.
It educates people.
It alerts people when there is danger.
Information gives instructions.
The information helps in decision making.
Information can be used in advertising goods.
Information dissemination
WAYS OF DISSEMINATING INFORMATION
i) Traditional Ways
ii) Modern Ways.
Information dissemination is the process of spreading or distributing information using various ways from one individual to another. or
Information dissemination is the process of making the information known to the general public.
SOURCE: This is the origin of the message. the source can be direct or indirect
MEDIUM: This is the means or channel of spreading information such as newspapers, signs, magazines radio television telephone internet, etc.
RECEIVER: These are the intended audience to receive the message or information.
Traditional ways of disseminating Information
Uses traditional tools to spread information for example songs, drums, poems whistle.
The modern ways of disseminating Information
Uses modern tools to spread information example Internet, TV, Radio stations, magazines, posters, burners, fliers, websites, Social media like WhatsApp, Facebook, tango, IMO, Instagram, tweeter, etc.
The comparison of modern and traditional ways of disseminating Information
TRADITIONAL WAYS MODERN WAYS
Slow in disseminating information Quick and faster to disseminate information
Most of them are manually operated They are electrically equipped
Message can be sent within a short distance They can cover a great distance
The information reaches a few people so many people can get information at a time.
The cost of sending the message is too high The cost of sending a message is very low
Contrast modern and traditional ways of disseminating information
The communication media
Communication media refers to the means of delivering and receiving data or information
Communication media can be classified into 2 categories
Guided media: the messages (data) are guided along a physical path. example of guided media include phone lines, twisted pair cables, coaxial cables, and optical fiber
Unguided media: are media that allow the transmission of data without the use of physical means
to define the path it takes (wireless). examples, Bluetooth, radio wave, microwave, infrared, Wi- Fi, etc.
Activity 1
A student should learn how to operate a radio receiver and a Television.
Test Yourself
Slow in disseminating information Quick and faster to disseminate information
Most of them are manually operated They are electrically equipped
Message can be sent within a short distance They can cover a great distance
The cost of sending the message is too high The cost of sending a message is very low
The information reaches a few people Many people can get information at a time.