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ICT student textbook/Science Technology and Society (view source)
Revision as of 18:42, 9 October 2016
, 18:42, 9 October 2016→Analog and digital communication
|Growth of ICT can be seen to be broadly in terms of 4 ages - premechanical, mechanical, electromechanical and electronic age. While technology for information creation, storage and processing has been developing continuously, one important development which changed the course of technology is the development of digital technologies in the electronic area. Whereas during the electromechanical area, information was stored largely stored in analog formats, What makes our society now different from ever before is the presence of digital technologies.
|Growth of ICT can be seen to be broadly in terms of 4 ages - premechanical, mechanical, electromechanical and electronic age. While technology for information creation, storage and processing has been developing continuously, one important development which changed the course of technology is the development of digital technologies in the electronic area. Whereas during the electromechanical area, information was stored largely stored in analog formats, What makes our society now different from ever before is the presence of digital technologies.
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==Analog and digital communication==
==Analog and digital technologies==
During the mechanical and electric analog phases of technology, information was created by a series of physical changes converted into electrical impulses for storing and machine, and each analog information storage required a specialized equipment to decode and read the information. A cassette player or a gramaphone disc is an example of such a device. Representing information for computing using physical changes often meant that the results could not be accurate as the changes could not be replicated exactly.
The idea of computation and developing a machine for performing computations led to the development of various electro-machanical computers, like the Tide Prediction Engine
An important breakthrough came when the binary system was invented. In the binary system information can in a series of "0"s and "1"s thus allowing information to be accessed
Can you think of all the things that we use for communication?
Can you think of all the things that we use for communication?
