The History and State of the Art of
Variable-Speed wind Turbine
Technology

ABSTRACT
Early wind turbines used for performing mechanical work (pumping, grinding and cutting) optimized aerodynamics by being allowed to run at variable speed. Some of the earliest DC electric wind turbines were allowed to run at variable speed. With the advent of gridconnected AC turbines, rotational speeds were limited in order to control the wind turbine AC frequency output to equal the grid frequency. With the advent of se ....etc

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History of 64-bit Computing: AMD64 and Intel Itanium Processors
64-bit History
• “640K ought to be enough for anybody” – Bill Gates
• 64-bit twice as fast as 32-bits?
• Benefits of 64-bit technology
• Applications of 64-bit technology
AMD64 Outline
• AMD Athlon 64 Specifications
• Operating Modes
• Register overview
• DDR controller and Hypertransport
AMD Athlon 64 Specifications
Infrastructure Socket 754
Number of Transistors 105.9 million
64-bit Instruction Set ....etc

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History of Computing
• Tim Bergin
• Computing History Museum
• American University
Ancient History
• Abacus
• 3000 BCE, early form of beads on wires, used in China
• From semitic abaq, meaning dust.
• Table Abacus
100,000 ------l---l----------------------------
50,000 -----l----------------------------------
10,000 -----l--- l--- l-----------------------
5,000 -----l----------------------------------
1,000 -----l---l-----------------------------
500 ----- ....etc

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This article is presented by:
Sudhir Kumar Routray
The University of Sheffield
History of Electronics

Abstract
In this paper the history of electronics has been represented in a chronological order along with the discoverer/inventor, who actually is responsible for that. The effects of electronics on the contemporary society are very significant and without the study of the effects the history is incomplete. Thus the effects on the economy, computing and the society a ....etc

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The History of PHP

The Creation of PHP

The first version of what came to be known as PHP was created in 1995 by a man named Rasmus Lerdof. Rasmus, now an engineer at Yahoo!,
He decided to call this technology Personal Home Page/Forms Interpreter. The technology provided a convenient way to process web forms and create content.
The name Personal Home Page/Forms Interpreter was later shortened to PHP/FI and eventually renamed to represent PHP: Hypertext Preprocessor.

....etc

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presented by
Rajitha.B


Telecommunication History
OBJECTIVES
o History of telecommunications
o Early telecommunications
o Telegraph and telephone
o Radio and television
Computer networks and the Internet
 The history of telecommunication began with the use of smoke signals and drums in Africa, the Americas and parts of Asia.
 In the 1790s the first fixed semaphore systems emerged in Europe; however it was not until the 1830s that electrical telecommunications systems started to appear. ....etc

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History of Indian Advertising



history


1950’s

Watershed years for Indian advertising
Industrial revolution in the Nehruvian era
1st survey of the rural market (Wood)
Burmah Shell vans used for advertising
Cinema advertising began
Kolkata gets the privilege of India’s first ad club
Leading ad agency - Press Syndicate
National created the Murphy baby
....etc

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History of Polymer and Plastics

History of Plastics and Polymers

Plastics are polymers. What is a polymer? The most simple definition of a polymer is something made of many units. Think of a polymer as a chain. Each page link of the chain is the mer or basic unit that is made of carbon, hydrogen, oxygen, and/or silicon. To make the chain, many links or mers are hooked or polymerized together. Polymerization can be demonstrated by linking strips of construction paper together to make paper garlands or ....etc

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Multimedia History
Early Multimedia Systems
Automatic Teller Machines
– 1973: First Automatic Teller Machine (ATM)• patents as old 1963
Kiosks
:– Any small structure that stands alone, usuallyfor the purpose of supplying a product orservice• attendant's booth in a parking lot,• a lottery booth in the center of a mall
.– 1955: The Telejuke: A TV and Jukebox forbars
– 1977: Siemens Corporation sponsorsresearch for the 1st touchscreen
– 1982: First touchscreens displayed as part ofthe World� ....etc

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Please give me history project . I prepaid the examination
....etc

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