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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 ...

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...

  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() {      ...

  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...

              Inorganic chemistry | chemistry Change to Mass Ratio of Electron             In 1897, British physicist J.J. Thomson measured the ratio of electrical charge ( e ) to the mass of electron ( m e ) by using cathode ray tube and applying electrical and magnetic field perpendicular to each other as well as to the path of electrons. When only electric field is applied, the electrons deviate from their Path and hit the cathode ray tube at point A. Similarly when only magnetic field is applied, electron strikes the cathode ray tube at point C. By carefully balancing the electrical and magnetic field strength, it is possible to bring back the electron to the path which is followed in the absence of electric or magnetic field and they hit the screen at point B. Thomson argued that the amount of deviation of the particles from their path in the presence of electrical or magnetic field depends upon:      ...

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 Inorganic chemistry | Chemistry.   Thomson Model of Atom  What is thomson model of atom ?              J. J. Thomson, in 1898, proposed that an atom possesses a spherical shape (radius approximately 10^-10 m) in which the positive charge is uniformly distributed. The electrons are embedded into it in such a manner as to give the most stable electrostatic arrangement. Many different names are given to this model, for example, plum pudding, raisin pudding or watermelon .                    visualised as a pudding or watermelon of positive charge with plums or seeds (electrons) embedded into it. An important feature of this model is that the mass of the atom is assumed to be uniformly distributed over the atom. Although this model was able to explain the overall neutrality of the atom, but was not consistent with the results of later experiments. Thomson was awarded Nobel Prize ...