Although humans are primarily land dwellers, the Earth’s surface is largely water. The world’s oceans make up 99% of the planet’s biosphere and contain the greatest diversity of life. Even the most biologically…
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The idea of a biologically diverse environment is easy to imagine in the middle of the tropical rain forest, where there are living organisms all around you, but what about the desert? A…
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The land mass of the crust is thin compared to the rest of the Earth’s layers. It makes up only about 1% of the earth’s total mass, but the continental crust can be…
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Surprisingly, life is found in many hostile environments on this planet. Very hot temperatures (5,000°C) near volcanic spouts rising from the ocean floor, and polar, subzero temperatures (−84°C) are at the extreme ends…
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The word science comes from the Latin word Scientia which means knowledge. The science as a subject has come to mean the systematic, consistent and excellent study of the physical word including everything…
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Native peoples, completely dependent on nature for everything in their lives, worshipped Earth as a nurturing mother. The soil sprouted plants and trees that provided food, clothing, and shelter. The rivers and seas…
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The meaning of an automobile is a four-wheeled vehicle, carries a small number of passengers, driven by an engine or motor and independent of rails or tracks. The subject of automobile engineering is…
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In the world of technology, there are vast numbers of users communicating with different devices in different languages. That also includes many ways in which they transmit data along with the different software…
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The abacus is the first known calculating device. This illustrates how the ancient computers worked. It was invented by the Chinese and is still widely used in the far east for commercial calculations….
Read more Computer has become an essential part of our day-to-day activities. Computers are used more or less in every sphere of life. Its growing importance is because if its unique features such as Accuracy,…
Read more In recent years, the computer industry has grown at a phenomenal pace. In a short time of 35 years or so computers have improved tremendously. In the last decade the speed of the…
Read more Computer is an electronic device for performing arithmetic and logical operations. Actually speaking electronic data processing does not go far back into the history. It is in existence merely from early 1940’s. The…
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It is a branch of technology known as information security as applied to computers. The objective of computer security varies and can include protection of information from theft or corruption, or the preservation…
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A DBMS is a software package for defining and managing a database. A real database includes various definitions such as fields names, data formats, record structures, file structures, rules for validating and manipulating…
Read more A database management system (DBMS) is the software that allows a computer to perform database functions of storing, retrieving, adding, deleting and modifying data. Relational database management systems (RDBMS) implement the relational model…
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In the beginning, only government “think tanks” and a few universities were linked. Basically the internet was an emergency military communications system operated by the Department of Defense Advanced Research Project Agency. The…
Read more The internet is a network of computers spanning the globe. This communication structure is a system connecting more than fifty million people in countries around the world. A global web of computers, the…
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Specific tasks of the computer are performed by the application software which includes applications such as Word Processor, MS Paint, Calculator and Games. Thousands of other programs are also available on the Internet….
Read more Software is a general term for the various kinds of programs used to operate computers and related devices. Software can be thought of as the variable part of a computer and hardware the…
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Specific tasks of the computer are performed by the application software. It includes applications such as Word Processor, MS Paint, Calculator and Games. Thousands of other programs are also available on the Internet….
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