Paper VI

Biodiversity and its conservation, Hotspots and threats to Biodiversity.

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Biodiversity is defined as the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species, and of ecosystems. Basically biodiversity is the total number of genes, species and ecosystems of a region. It includes … Read more Biodiversity and its conservation, Hotspots and threats to Biodiversity.

Software and application of PC software packages: Software definition, Type of software and its Knowledge of Word processing, Spreadsheets and Power point presentation software packages

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Software is a set of programs, which is designed to perform a well-defined function. A program is a sequence of instructions written to solve a particular problem. There are two types of software − System Software Application Software System Software The system software is a collection of programs designed to operate, control, and extend the … Read more Software and application of PC software packages: Software definition, Type of software and its Knowledge of Word processing, Spreadsheets and Power point presentation software packages

Basic element of Communication systems, data transmission mode, transmission media, network topologies, network types, communication protocols, network security mechanism.

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Elements of a Communication System Elements of a communication system The above figure depicts the elementsof a communication system. There are three essential parts of any communication system, the transmitter, transmission channel, and receiver. Each parts plays a particular role in signal transmission, as follows: The transmitter processes the input signal to produce a suitable … Read more Basic element of Communication systems, data transmission mode, transmission media, network topologies, network types, communication protocols, network security mechanism.

Data, Data processing, business data processing, data storage, file management system and data base management systems.

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Data, Data Processing and Database management System Data processing and data management are critical components of business organizations. DATA PROCESSING Data processing refers to the process of performing specific operations on a set of data or a database. A database is an organized collection of facts and information, such as records on employees, inventory, customers, … Read more Data, Data processing, business data processing, data storage, file management system and data base management systems.

Definition of digital computer, Elements of computer: Input unit, Output unit, Primary memory, Secondary memory and Processing unit.

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Computer is an electronic device that is designed to work with Information. term computer is derived from the Latin term‘computare’, this means to calculateor programmable machine. Computer cannot do anything without a Program. It represents the decimal numbers through a string of binary digits. The Word ‘Computer’ usually refers to the Center Processor Unit plus Internal memory. Charles Babbageis called the “Grand Father” of the computer. … Read more Definition of digital computer, Elements of computer: Input unit, Output unit, Primary memory, Secondary memory and Processing unit.

Classifications, generations, applications and limitations of digital computers

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Computer Classification: By Size and Power Computers differ based on their data processing abilities. They are classified according to purpose, data handling and functionality. According to functionality, computers are classified as: Analog Computer: A computer that represents numbers by some continuously variable physical quantity, whose variations mimic the properties of some system being modeled. Personal computer: A personal computeris a computer small and low cost. The … Read more Classifications, generations, applications and limitations of digital computers

Ozone depletion

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Ozone (O3) is a molecule made up of three atoms of oxygen (O), and is mostly found in the strato- sphere, where it protects us from the Sun’s harmful ultraviolet (UV) radiation. Although it represents only a tiny fraction of the atmosphere, ozone is crucial for life on Earth. The stratospheric ozone layer forms a … Read more Ozone depletion

Basic concepts of ecosystem

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Eco-System-An ecosystem is defined as a structural and functional unit of biosphere consisting of community of living beings and the physical environment, both interacting and exchanging materials between them. It includes plants, trees, animals, fish, birds, micro-organisms, water, soil, and  people. When an ecosystem is healthy (i.e. sustainable) it means that all the elements live … Read more Basic concepts of ecosystem