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ICT student textbook/Science Technology and Society (view source)
Revision as of 12:20, 7 December 2016
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Such a device is called an [[wikipedia:Analog_computer|analog computer.]]
Such a device is called an [[wikipedia:Analog_computer|analog computer.]]
Can you guess what these two images are? The one on the left is called the Abacus which was used to perform calculations with numbers by moving the beads. The one on the right is called the Antikythera machine which was used in Greece to calculate the positions of astronomical objects.
Can you guess what these two images are? The one on the left is called the Abacus which was used to perform calculations with numbers by moving the beads. The one on the right is called the Antikythera machine which was used in Greece to calculate the positions of astronomical objects.
===== Development of mechanical computers =====
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. Analog machines could be programmed for specific applications as well as for general computing. Since information was being represented physically, results were not always accurate as they could not be replicated exactly.
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| style="width: 70%;" |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. Analog machines could be programmed for specific applications as well as for general computing. Since information was being represented physically, results were not always accurate as they could not be replicated exactly.
| style="width: 70%;" |
| style="width: 30%;" |See below how a difference engine, designed by Charles Babbage worked.
| style="width: 30%;" |See below how a difference engine, designed by Charles Babbage worked.
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