What is a Computer? Simple Definition


Definition of computer: - Computer is an electronic machine. By Mathematical or Non | Mathematical work can be done.

The computer is made up of hardware and software. It is a universal machine.


 Computer Features:



  • Speed: - Computer works at a very fast speed. Its speed is measured in hurts.
  • Automatic: - The computer performs its work on its own. Once instructed, it can be done any time, that is, there is no need to supervise any person to get the work done by computer.
  • Accuracy : - Computer performs its work with great precision. If the same work is done by humans then there can be error. But if the same work is done by computer, it will calculation very fast.
  • Multi talented (Universal): - Computer is a multi functional machine. Whom it can do any work in the world. That is, it is a universal machine.
  • Memory: - The memory of the computer is very high. You can increase or decrease the memory of the computer as per the requirement. Whereas in human memory it is not special. Human beings are important only. Only remembers things. Does not remember unnecessary things.
  • Exhaustion: - The computer has the capability to work 24x7 days. Is not inside human It never gets tired. Whereas human gets tired after working for some time. And he needs rest.
  • Honest: - Computer performs its work with honesty. Whereas human does not perform his task honestly.
  • User Friendly: - Computer is user friendly. That is, it is easy to operate.
  • Computer uses low power.
  • With this, we can communicate with the world.


What is a Computer? Simple Definition




Weakness


  • NO IQ : - The computer does not have the ability to understand and think. Which is inside the human being. This is the reason that computer is a slave of humans.
  • No Feeling: - There is no feeling inside the computer. Which is inside the human being.



 Brief History of Development of Computer



The development sequence of computers is 3000 years old. China first invented the calculating device Abacus. It is a mechanical device. Which is still being used in China, Japan and other countries including Asia. Abacus is a frame of wires. Plastic or metal balls are threaded in these wires. Initially, Abacus was used by traders to do calculations. This machine is used for adding, subtracting, multiplying or dividing digits. Centuries later, other machines were developed for calculating digits. In the 16th century, French mathematician Blaise Pascal developed a mechanical numerical calculator in 1645. This machine is called adding machine. Because this machine could only add or subtract, this machine worked on the principle of clock and odometer. It had several toothed grapes that used to rotate. Points 0 to 9 were printed on the teeth of the goat. Each Chakri had a local value. Each chakri spun itself at one point after one round of the previous chakri. This editing machine of Blaze Pascal is called Pascaline. Which was the first calculating device. Even today the same instrument works in the speedometer of a car or bike. It was developed in 1694 by German mathematician and philosopher Gottfred Wilhelm von Leibniz, which is called the Reckoning Machine or the Leibniz cycle.

This machine was also able to do multiplication and division apart from subtracting.


Many calculating instruments were developed after this




What is a Computer Simple Definition




(Jacquard Loom): - By becoming French in 1801, Joseph Jacquard invented a fabric weaving loom that automatically designed or patterned clothes. The specialty of this loom was that it controlled the design of the fabric with punched punch cards of cardboard. The threads were guided by the presence or absence of holes on the punch card.

This loom by Jacard gave two ideas which proved useful in the development of computers further. Notifications of this first. Is coded on a punch card. The second is the collection of information instructions stored on the punch card. Therefore, whenever the punch card is used, this set of instructions will act as a program.



Charles Babbage's Difference Engine: 


The early nineteenth century is considered the golden age in the history of computers. The British mathematician Charles Babbage realized the need to develop a mechanical counting machine when there was an error in the tables meant for calculation. Since these tables were handmade. That is why there was an error. Charles Babbage built a machine in 1822, which was borne by the British government. The machine was named Defense Engine. This machine was equipped with gears and shafts and was steamed. After this, in 1833, Charles Babbage developed an analytical engine, the developed form of differential engine.


This machine was capable of performing many types of calculation tasks. It had the ability to store instructions. And by this, the results could also be printed automatically. Babbage contributed a lot in the field of computers. Babbage's Analytical Engine became the basis of modern computers and this is the reason that Charles Babbage is called the father of computer. Babbage's Analytical engine was previously deemed useless. But later Ada Augusta helped develop the calculation instructions in the Analytical Engine. For this reason Ada Augusta is credited with being the first programmer. To honor Augusta, a computer language was named Ada.


What is a Computer Simple Definition   What is a Computer Simple Definition



(Hollerith Census Taulator)

In 1890, another important event occurred in the history of computers, that was the work of the US Census. Before 1890, census work was done in traditional ways. The census started in 1880 took seven years. In order to carry out the census work in a short period of time, Hollerith built a machine in which the punch card was operated by electricity. It took only three years to conduct the census with the help of that machine. Which was very rare. In 1886, Hollerith formed a tabulating machine company to make punch card machines. In 1911, the name of the company was changed to Computer Tabulating Recording Company. In 1924 the name of this company was changed to IBM. Whose full name is 'International Business' machine. Today, it has become the largest computer manufacturing company in the world.



  • (Aiken and Mark - 1) - Electromechanical Computing reached its peak in 1940. Four top IBM engineers and Howard Iken developed a machine in 1944. And its official name was Automatic Sequence Controlled Calculator. Later this machine was named Mark - 1. It was the world's first Electromechanical Computer. It has 500 miles in length. There were wires and 3 million electronic connections. It could perform a multiplication in 6 seconds and a part in 12 seconds.
  • ABC: - The full name of this computer is Atansoft Berry Computer. The technology of Aiken and IBM's Mark-1 was outdated with the introduction of new electronics technology. The new electronics technology did not require any mechanical components. Whereas the Mark-1 was an electrical machine.
  • The ENIAC (1946): - The full name of this computer is Electronic Numerical Integrator and Calculator. It was developed for the army. Its size was equal to 20 y 40 square feet room and 18000 vacuum tubes were used in it. This computer used to do one joint in 200 micro seconds and part. In 2000 Micro Sceconds.
  • The EDVAC (1946 - 52): - The full name of this was Electronic Discrete Variable Automatic Computer. It was the first digital computer.
  • The EDSAC (1947 - 49): - Its full name was Electronic Delay Automatic Calculator. This was the first computer on which the program was run.
  • The UNIVAC - 1 (1951): - Its full name was Universal Automatic Computer. It was the first digital computer. And it was the first computer to be used in business. After this IBM 701 Commercial Computer was created.

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