Changes

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==Analog and digital technologies==

==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.

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.  Analog machines could be programmed for specific applications as well as for generalized computation.  

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 through only a combination of"1"s an "0". This allowed information to be communicated in discrete bits which could be combined and recombined.

 

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?

==Cell phones==

==Cell phones==