Saturday, June 19, 2010 7:51 PM
Labels: computers for beginners , History of Computers , IC , learn computers
Computer is a mechanical device used for computing the jobs, mathematical problems, it is being used in many sectors from small scale to large scale.
History of Computers
The Concept of Computer lies in Abacus (a computing slate) 150 B.C. The word computer was enforced late 1600 AD. In 1837, the then renowned scientist Charles Babbage (known as father of computers) was the first man to design the computer with the concept of manufacturing unit (Inputing raw material, processing the raw material as per our requirement and turn the raw material into finished goods) by using programmable concept of computing. Basically the need of invention of computers started in late 1890, to process the data of census in United States of America. and the generation of computers started. Meanwhile many other scientist made efforts to design a user-friendly computing device. The actual era started after 1945. Categorically Computer History is divided into generations, each generations made computers relatively more familiar than previous generation. Lets take the journey by understanding each generation one-by-one.
First Generation: (1945-60) Vacuum Tubes The first computer was developed in mid on 20th century 1940-45, these computers consumed large amount energy, area, hundreds of people to operate the machine, it was built with the help of Vacuum Tube which use to produce large amount of heat and was not user friendly to operate. Vacuum Tube used to damage frequently. In this generation the concept was sucessful but the device was not useful.
Second Generation: (1960-70) Transistor Vacuum tubes were replaced by Transistor, which produced less heat compartively to vacuum tube and also proved to more user friendly, but the data was entered using machine level language (0,1) ASCII/ANSI which was far away to understand by common man and was limited of usage.
Third generation: (1970-80) IC
Third generation: (1970-80) IC
Transistors were replaced by IC (Integrated circuit) made by using silicon relatively cheaper and easy to use, this era was useful and the concept of small computers came into existence. single IC used to performed many task (IC - Integrated Circuit [also known as micro circuit, integrated chip, silicon ship] made of silicon, an semiconductor device based circuit board, can perform large amount of work). The concept of Mainframe computer came into existence.
Fourth Generation: (1980- ) (VLSI - Very Large Scale Integrated Circuit) The great achievment of making computer user friendly. In comparision to all earlier generation, this generation is more user-friendly, the concept of Microprocessor became more popular. The usage of computers increased because of computers turned into small in size, cheaper than previous computers, more user-friendly, able to perform multi task. (Mirco processor- Its a mutilpurpose device, microprocessor are the main part of computers, situated in CPU, Intel world famous company is major producers of micro processor)
 |
| Internet |
Internet and web networking: The concept of web networking started in 1970 in United States of America, it was restricted to only those people who were able to understand the Machine language, but after 1990 the concept of World Wide Web (www) and email came into existence. Internet has made world closer. Telecommunication became more faster and easier to use. Internet has proven that Computer is an integrated part of every individual. Information is circulated from one location to other electronically and easily.
Comments (0)
Post a Comment