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Showing posts from October, 2021

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

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 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...
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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 ...
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Generations Of Computers and their Evolutions ?

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Generations Of Computers and their Evolutions  ? FIRST GENERATION OF COMPUTERS (1949-55) :      The first electronic computer was introduced in 1946 by a team led by Professors Eckert and Mauchly at the University of Pennsylvania in U.S.A.-This computer was called Electronic Numerical.integrator and Calculator (ENIAC). It used high speed vacuum tube switching devices. It had a very small memory and  was designed primarily to calculate the trajectories of missiles.  The ENIAC added two digits in around 200 microseconds and multiplied in about 2800 microseconds.   IMPLEMENTATION OF PROGRAM LOOPS : The first computer was designed and commissioned in 1949  at Cambridge University, U.K. under the leadership of Professor Maurice Wilkes. This computer called EDSAC (Electronic Delay storage Automatic Calculator) used mercury delay lines for storage.      Early in the 1950s, stored programme electronic computers saw commercial manu...
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How to install Mongodb v4.4 ? MongoDB illegal instruction (core dumped) issue ! What is core-dump ?

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  MongoDB illegal instruction (core dumped) issue ! How to install  Mongodb v4.4  ?  What is core-dump ?  Today,             I'm gonna talk about what is core dump   and  how to solve MongoDB illegal instruction (core dumped) issue ,  For that watch this Video ( Language Hindi ) What is   illegal instruction core dumped ? = >  Accessing memory that "does not belong to you" causes a Core Dump/Segmentation fault. A core dump occurs when a piece of code attempts to read and write in a read-only memory location or a freed memory block. It's an error that means there's a problem with the memory. The following are examples of common segmentation errors: Changing the literal value of a string: Because the line *(str+1)= ‘n' tries to write a read-only memory, the following programme may crash (give a segmentation fault error). In  >  C  int main() {      ...
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What is thyroid eye disease ? thyroid associated ophthalmopathy (TAO), thyroid orbitopathy, Graves’ orbitopathy or Graves’ ophthalmopathy (GO).

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What is thyroid eye disease ? thyroid associated ophthalmopathy (TAO), thyroid orbitopathy, Graves’ orbitopathy or Graves’ ophthalmopathy (GO) ? Thyroid eye disease (TED) is an eye condition that causes the muscles and soft tissues in and around your eye socket to swell. It usually happens when you have a problem with your thyroid gland. It may also be called thyroid associated ophthalmopathy (TAO), thyroid orbitopathy, Graves’ orbitopathy or Graves’ ophthalmopathy (GO). The ocular manifestation of thyroid eye diseases are manifolds. They may be present as thyrotoxicosis, lid retrac- tion, soft tissue involvement, proptosis and optic neuropathy.         The Thyrotoxicosis (Graves dis- eases)         Usually present with 3rd to 4thdecades of life, women are mostly effected than the men with involvement organ specific autoimmune disorders. Thyroid eye diseases may be present as a simple eye disco...
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Who discovered electron ? How to discovered electron ? What is cathode ray discharge tube ? What is cathode ray and cathode ray particles ? | Inorganic chemistry | Chemistry.

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                Inorganic chemistry | Chemistry   Discovery of Electron                   In 1830, Michael Faraday showed that if electricity is passed through a solution of an electrolyte, chemical reactions occurred at the electrodes, which resulted in the liberation and deposition of matter at the electrodes. These results suggested the particulate nature of electricity.           In mid 1850s many scientists mainly Faraday began to study electrical discharge in partially evacuated tubes, known as cathode ray discharge tubes . A cathode ray tube is made of glass containing two thin pieces of metal, called electrodes, sealed in it. The electrical discharge through the gases could be observed only at very low pressures and at very high voltages. The pressure of different gases could be adjusted by evacuation of the glass tubes. When sufficiently high vo...
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Who discovered proton and neutron ? How to discovered proton and neutron ? What is canal ray? What is anode ray ? | Inorganic chemistry | chemistry.

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              Inorganic Chemistry |Chemistry   Discovery of Protons and Neutrons           Electrical discharge carried out in the modified cathode ray tube led to the discovery of canal rays and anode rays carrying positively charged particles. The characteristics of these positively charged particles are listed below.      (i) Unlike cathode rays, mass of positively charged particles depends upon the nature of gas present in the cathode ray tube. These are simply the positively charged gaseous ions.       (ii) The charge to mass ratio of the particles depends on the gas from which these originate.       (iii) Some of the positively charged particles carry a multiple of the fundamental unit of electrical charge.      (iv) The behaviour of these particles in the magnetic or electrical field is opposite to that observed for electron or cathode rays. ...
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Nature as depicted in the Kalidasa's literature

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                                   Kalidasa is regarded as the most sparkling star of Sanskrit literature. He is a genius poet with extraordinary poetic talent and literary power. Kalidasa has the credit to compose three dramas, namely - Abhijnanasakuntalam', 'Malavikagnimitram' and Vikramorvasiyam'.Beside these dramas ,he also created tow Mahakavyas , viz. 'Raghuvamsam' and 'Khandakavyas , viz. Meghaduta ' and 'Ritusamhara'. All his creations are very unique and heart touching. kalidasa's descriptive power is unbeatable. he describes all the the situations so lively that when someone goes through his writings, he feels as if it were happen really .          "  M an is a child of nature .Since the dawn of human civilization man has relationship with nature. "           Ancient human civilization was intimately related w...
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What is password attacks ? How many types of password attacks ? How to keep safe your self from hacking by password attacks ?|Computer science|ethical hacking

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What is password attacks ? How many types of password attacks ? How to keep safe your self from hacking by password attacks ? Hi , my dear friends i’m goning to discuss about a toppic which terified whole world in this degital generation.so i decided to write on this toppic. Here in this topic i talk about some general quetions like - what is password attacks ? How many types of password attacks ?How to keep safe your self from hacking by password attacks ? How to be safe from them ? What is password attacks ? How many types of password attacks ? How to keep safe your self from hacking by password attacks ? Password Attacks – An attemp to obtain or decrypt a user’s password for illegal use. Hackers can use cracking programs , ddictionary attacks, and password sniffers in password attacks. Defence against password is rather limited but usually consists of a passwors policy including a minimum length , unrecognizable word , and frequent changes. Type of Password attacks -  ...
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Monetary Policy of Malaysia

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  Monetary Policy in Malaysia             Prior to the 1997 Asian Financial Crisis, the Malaysian ringgit was an internationalized currency, which was freely traded around the world. Just before the crisis, the Ringgit was traded RM2.50 at the dollar. Due to speculative activities, the Ringgit fell as much as RM5.00 to the dollar in matter of weeks. Bank Negara Malaysia, the nation's central banks decided to impose capital controls to prevent the outflow of the Ringgit in the open market. The Ringgit is not traded internationally, a traveller needs to declare to the central bank if taking out more than RM10,000 out of the country and the Ringgit itself was pegged at RM3.80 to the US dollar. The fixed change rate was abandoned to floating exchange rate in July 2005, hours after People's Republic of China announced the same move. At this point, the Ringgit is still not internationalized. The Ringgit continue to strengthen to 3.18 to the dollar in March 2...
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Architecture and sculptures of Assam

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Architecture and Sculpture Assam has a rich heritage of architecture and sculpture from ancient times. The manuscripts or inscriptions, remains of temples or shrines and old mementoes remind us the rich legacy of these art forms. The stone gate of Do-parbotia at Sonitpur is the example of oldest architecture discoveree till now. We find the es- sence of early Gupta era architecture in this gate.                         Umachal Silalipi discovered on Nilachal hills at Guwahati is the oldest inscription found till date. Many palaces or me- mentoes were built in ancient Kamrup under the auspices of various royal dynasties. Most of them got ruined with the passage of time. Among them the Siddheswari temple at Kamrup district is worthy of mention. The influence of South Indian architecture is seen in this temple.          After that...
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