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In today’s class, we will be talking about information evolution and communication technology. Enjoy the class!
Information Evolution and Communication Technology
Information evolution could be defined as a process of changing from simple techniques of data and information processing to complex and advanced methods through inventions and innovations.
Communications technology, also known as information technology, refers to all equipment and programs that are used to process and communicate information. Professionals in the communication technology field specialize in the development, installation, and service of these hardware and software systems.
In electronic means, information transmission is from the sender to the receiver via an electronic communication channel. Electronic means of information transmission include telephone, telegraph, telex, radio, etc. The non-electronic means of transmitting information does not require electronic communication channels.
Those that involve the use of electronics include prints, telephone, Radio, Television, Fax, Satellite, Internet and GSM. Audio-visual: This is a mode of receiving information in both visual and audio form; i.e. Both hearing sound and voice, and seeing pictures. E.g. Television, Oral, etc.
Non- electronic communication involves the distribution of a message usually in the form of Reports, Letters, Flow Charts, Invoices and even Verbal Communication among employees.
Stages of information evolution
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The invention of printing:
Printing could be defined as a process for reproducing text and images on paper with ink or toner using a printing press. The invention of printing with movable type marks the beginning of modern printing and the advent of information explosion.
- Modern printing started with block printing. In block printing text and images are carved in woods. The carved woods are inked and pressed on a paper or textile. It is still in use by graphic artists to make banners. Books that were written this period were copied by hand.
- After block printing, the next was lithography. This is a method of printing on a smooth surface. It is still in use by most old printers.
- After lithography were colour printing, screen printing and flexography. Flexographic printing is a modern printing method which can be used to print banners, labels, bags, and plastics.
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The invention of the radio and television:
Radio and television were major agents of social change in the 20th century. It opened windows to learning other peoples’ cultures. It also brings distant events directly into the homes of millions all over the world.
Radio is a technology of wireless transmission of information through electromagnetic waves. The invention of the radio was facilitated by two other inventions: the telegraph and the telephone. These three technologies are closely related. Radio technology began as “wireless telegraphy”. The invention of the radio started with the discovery of radio waves.
Television is based on the principle of successive transmission of frames through scanning. The first television sets were commercially available in 1930. Today we have a digital television which uses digital technologies that allow a better quality of the TV image.
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The invention of the computer:
The ideas of many scientists and engineers led to the invention of the computer. These ideas were developed in the 1930s and 1940s, mostly independently of each other, in Germany, Great Britain, and the USA, and were turned into working machines. The computer started as an abacus, invented in Babylon in 3000BC.
In our next class, we will be talking about Classification of Means of Transmitting Information. We hope you enjoyed the class.
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I would have loved if you could add the invention of the telephone before the radio and television. This is just a suggestion.