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Modern Technology

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Personal computer Personal computers (PCs) fall into two main types: IBM-compatible PCs, known simply as PCs, and Apple Macintosh PCs, known as “Macs”. They differ in the way files and programs, and the user’s access to them, are organized, and programs must be tailored for each type. However, in most other respects PCs and Macs have much in common. Both contain microchips, or integrated circuits, that store and process data. The “brain” of any PC is chip known as central processing unit (CPU), which performs mathematical operations in order to run program instructions and receive, store, and output data. The most powerful personal computer CPUs today can perform more than a billion calculations a second. Data can be input via CDs, USB memory sticks, and other storage media. Highly portable laptop and network PCs are also in widespread use. Most PCs are able to communicate with many other devices , including digital cameras and smart phones. Tablet computer By the early 1990s ele
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THE SUN

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The Solar System The solar system consist of a central star (the Sun) and the bodies that orbit it. These bodies include eight planets and their more than 160 known moons; dwarf planets; Kuiper Belt objects; asteroids; comets; and meteoroids. The Solar System also contains interplanetary gas and dust. The planets fall into two groups: four small rocky planets near the Sun (Mercury, Venus, Earth , and Mars); and four planets further out, the giants(Jupiter, Saturn, Uranus, and Neptune). Between the rocky planets and giants is the asteroid belt, which contains thousands of chunks of rock orbiting the Sun. Beyond Neptune is the Kuiper Belt and, more distant, the Oort Cloud. Most of the bodies in the planetary part of the Solar System move around the Sun in elliptical orbits located in a thin disc around the Sun's equator. All the planets orbit the sun in the same direction (anticlockwise when viewed from above) and all but Venus and Uranus also spin about their axes in this directio
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OUR ENVIRONMENT

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OUR ENVIRONMENT We have heard the word 'environment' often being used on the television, in newspapers and by people around us. Our elders tell us that the 'environment' is not what it is used to be earlier; others say that the developed and developing countries are regularly held to discuss 'environmental' issues.  ECO-SYSTEM - WHAT ARE ITS COMPONENTS? All organisms such as plants, animals, microorganisms and human beings as well as the physical surroundings interact with each other and maintain a balance in nature. All the interacting organisms in an area together with the non-living constituents of the environment form an ecosystem. Thus, an ecosystem consists of biotic components comprising living organisms and abiotic components comprising physical factors like temperature, rainfall, wind, soil and minerals.       For example, if you visit a garden you will find different plants, such as grasses, trees; flower bearing plants like rose, jasmine, sunflower; a
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FOOD CHAIN and FOOD WEB

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FOOD CHAIN The flow of energy from one organism to other is called as food chain. FOOD WEB The flow of energy from one organism to many organism is called as food chain.                                                    OR Food web, consist of many food chains.
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Human excretory system

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EXCRETORY  SYSTEM WHAT IS EXCRETION? There are various metabolic activities take place inside our body.As a result of which many wastes or  substances such as carbon-di-oxide, urea and excess water are formed.This process of removal of toxic wastes from our body of an organism from time to time is called excretion EXCRETION is the process of removal of metabolic wastes from the body of an o rganism through the excretory organs. EXCRETORY ORGANS OF HUMAN  BEINGS. Several organs take part in excretion in human being.Along with the lungs,skin,liver and kidneys are the chief excretory organs of the human body let's discuss about the excretory organs of the human beings  LUNGS Being a respiratory organ also serve as excretory organs because they help to get rid of carbon-di-oxide by the process of exhalation excess water also leaves the lungs as water vapour. KIDNEYS These are the main excretory organs which help in removal of nitrogenious,toxic wastes along with excess water and dissol
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ECO-SYSTEM--WHAT ARE ITS COMPONENTS

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All the interacting organisms in an area together with the  non-living constituents of the environment form  an ecosystem. An Eco-system consist of; Biotic components: living organisms Ab iotic components: physical factors like temperature,rainfall,wind,soil and minerals.
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Structure of coronavirus

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This is the structure of Corona virus.
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