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Parts Of A Computer and their functions (What they do , how they work ?)

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Parts Of A Computer  and their functions A computer system is made up of hardware and software. Hardware means the physical parts of the computer and software Shears the computer programs that are run on the computer.  The hardware of a computer is classified into three categories -- 1. Input Device  2. Processing Unit, and  3. Output Devices  INPUT DEVICES  : 1. KEYBOARD  The keyboard resembles a typewriter. But there are addmonal keys that handie control functions. The computer keyboard has three categories of keys—~  Alphanumeric keys  Special Keys  Function Keys The Alphanumeric Keys: The Alphanumeric Keys comprise alphabets (A-Z or a-z) ,Numbers (0-9) and other characters like space.  .  /  > < ' " ;  :  ~ @ # $ % ^ & * ( ) + | \ { } [ ] .  The Special Keys : The Special Keys perform specific tasks. Some of the special” keys are Enter or the Return Key, Backspace Key, Del Key, the Ins Key...

What are the Classification of Computer and their types with example, function, uses ?

 What are the Classification of Computer and their types with  example , function , uses ?  Although a  clear-cut classification of computers is difficult, computers can be broadly classified on the basis of purpose,  components and size.  Purposewise, computers can be classified as - 1. Analog Computers  2. Digital Computers   3. Hybrid Computers   1)  ANALOG COMPUTERS  : Analog computers are computers that are measure physical quantities (e.g. pressure, temperature, length etc} and convert them to numeric values. For example, a thermometer does not perform any calculations but measures the temperature of the body by comparing the relative expansion of mercury.  USES - Analog computers are used mainly for scientific and engineering purposes because they deal with quantities that f vary constantly. They give only approximate results.  Types Of Analog Computer : Slide Rules Differential Analysers Castle Clock Electroni...

Types of Computers and their example with a Brief ( with Picture & Video )

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Types of Computers and their example with a Brief ( With Picture & Video ) Computers vary widely in performance, size and cost. Depending upon these parameters, the computer industry classifies them into following Categories : :> 1. Microcomputers (Micros, for short)  2. Minicomputers (Minis, for short)   3.  Mainframes  4. Supercomputers  Performance is measured in terms of speed of processing instructions, storage capacity, ability to handle a large number of input and output devices, and nature of operations performed. Generally, better the performance, the larger the size, and higher the cost.  1.  MICROCOMPUTERS  Microcomputers are the lowest end of the computer range. The special purpose devices that are used to control washing machines and the highly visible personal computers you use on desktops both fall under this category.  The most common applications of the PC are word processing, spreadsheet calculating and database ...

Medicinal alien plants of Arunachal Pradesh : Review , Alien are founded in Arunachal Pradesh

        Accompanying with the recent rise in transcontinental trading and travelling, an imcreasing number of plants have been either intentionally or unintentionally translocated far from their native areas (Khuroo et al., 2007). Intentional translocation includes the introduction of non-native plants for agricultural or ornamental purpose. Those introduced plants often escape from the cultivated places to wild habitat if the environmental condition permits. Unintentional introduction occurs with the small mobile seeds that dispersed by animals or get mixed in import goods (Khuroo et al., 2007; Sharma et al., 2005).            Those translocated plants in the non-native lands, called alien plants (Pysek et al., 2004), have attracted the broad attention from various fields such as biology, ecology and economy. Some alien plants, often cultivated, provide food, fuel, fodder or medicine, whereas others cause negative impacts on a...

What is Cholesterol and its Functions (how Work), types ,causes,treatments for high cholesterol , The Symptoms of high cholesterol, Lifestyle causes?

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What is Cholesterol ? Cholesterol is a fat (lipid) which is produced by the liver and is crucial for normal body functioning. Cholesterol is found in many foods, but we donot require it in our diet because the body can synthesize all we need. Cholesterol exists in the outer laver of every cell in our body and has many functions. It is a waxy steroid and is transported in the blood plasma of all animals. It is the main sterol synthesized by animals - small amounts are also Synthesized in plants and fungi. The word “cholesterol" comes from the Greek word chole, meaning “bile”, and the Greek word stereos, meaning “solid, stiff”.  Functions of cholesterol (How It works in our Body ?) 1. It builds and maintains cell membranes (outer layer), it prevents crystallization of hydrocarbons in the membrane.  2. It is essential for determining, which molecules can pass into the cell and which cannot (cell membrane permeability) . 3.   It is involved in the production of sex hormones...

What is Antioxidants. Free radicals and Some externally generated sources of free radicals ?How do antioxidants work ? type of antioxidants

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What is Antioxidants with Example & health benefits of antioxidants? An antioxidant is a molecule that inhibits the oxidation of other molecule. Oxidation is a chemical reaction that transfers electrons or hydrogen from a substance to an oxidizing agent. Oxidation produces free radicals which ultimately cause damage to the cell.  What is free radicals ?  The human body is composed of different types of cells and cells are composed of different types of molecules. Molecules consists of one or more atoms joined by chemical bonds. Atoms consist of a nucleus (containing the protons and neutrons) and electrons which surrounds the nucleus in one or more shells. When a substance that has a full outer shell will not enter in chemical reactions, but the substance which do not have full outer shell seek to reach a state of maximum stability. [the maximum number of electrons to be stable in the 1st shell K is 2 (2x? = 2.1 = 2), in the 2nd shell L is 8 (2x? = 2.2°=8) and in the 3rd sh...

Introduction Of Horticulture ,its features and brunches ?What is Horticulture In Hindi ?

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Introduction Of Horticulture            भारत दुनिया का  7  वा  सबसे बड़ा देश है जिसका कुल  क्षेत्रफल 328.73  m ha.  है, और 137  करोड़ (2020 ) के बादी है बिष्व  में चीन के बाद दूसरी सबसे बड़ी आबादी वाले देश है  भारत । कुल कृषि करणे  योग्य भूमि 144 m.ha. भारत  मे  55-60% प्रतिशत आबादी कृषि और कृषि के साथ   सम्बन्धित  गतिविधियों पर निर्भर करती है। बागवानी फसलें(Horticulture Crops ) भारत  के कुल कृषि उत्पादन का एक महत्वपूर्ण हिस्सा हैं। बागवानी(Horticulture) शब्द लैटिन शब्दों से लिया गया है: "hortus " जिसका अर्थ है "उद्यान" और "Kalpura " जिसका अर्थ है "खेती"। प्राचीन दिनों में बगीचों को घरों या मकानों  के आसपास ऊंची दीवारों के साथ घिरा हुआ  बाड़ों में रखा जाता  था। ऐसे  स्थानों का उपयोग फलों, सब्जियों, फूलों और सजावटी पौधों को उगाने के लिए किया गया था। इसलिए, मूल अर्थ में "बागवानी संरक्षित स्थानों  के भीतर उद्यान पौधों की खेती को संदर्भित करता है"। वर्त...

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