Short Essay on Computer

[Introduction. What a computer is. How and when it was invented. Structure/Components. The computer program. Types. Computer and the modern civilization. Conclusion.]

Computer Essay Paragraph and Composition – From the very beginning of man’s civilization man has been advancing towards a perfection through newer and newer inventions and discoveries. But the only modern invention which has exceeded the excellence of all other inventions of man in all ages is the computer. It is said that now we live in the computer age.

The literal meaning of the word ‘computer’ is ‘an instrument that computes or does various calculations’. Fundamentally it is a calculating machine. It can perform various calculations like addition, subtraction, division, multiplication and soon. In fact, it can receive innumerable data and instructions and perform thousands of calculations within seconds and then give the results. Apart from doing mathematical calculations, a computer has surprising capabilites of manipulating the input data according to logic and making conclusions as per instructions. The work which a man would otherwise do in thousands of days is done by the computer within minutes or hours.

The modern computer is a very modern electronic instrument. But in the primary phase of its evolution, it was not so. It has a history of its evolution. In 1643 the French mathematician B. Pascal invented the mechanical calculating machine for performing some arithmetic calculations. In 1671 Lebonese and in 1812 Charles Babbage invented two improved models of mechanical compnuters. The first electro-mechanical computer was made jontly by the Harvard university and the IBM company in 1944. At last the electronic computer came into existence in 1946. However, the major improvements in the computer technology was possible only after 1971. At present there have been unimaginable improvements in this technology.

A computer has two main aspects: The hardware and the software. The hardware is the machine itself, and the software is a combination of various symbolic instructions or codes, better known as the computer language. It has some components as input devices, the CPU or the Central Processing Unit, and the output devices. The input devices receive instructions in codes which are similar to human language.

The hardware can be thought of as the skeleton and the software, the flesh and blood- if the whole computers were to be imagined of as a human being. The software or the programs virtually help the hardware function the way the user wants it to. The programs are of two types one is the operating system and the other, the application program.

The operating system coordinates various functions of the hardware as well as activates the applications programs. The applications programs, on the other hand, perform a mathematical calculation. The whole system of the computer is the combination of these programs and hardware systems.

The coded set of instructions that are stored in the memory of the computer for performing various calculations is called the computer program. A computer uses the binary method for its internal calculations. The compiler of the applications programs translate into the computer language codes any instructions given to it by the user.

The computer can be classified according to its size speed, and internal structure. We can be based on these criteria of classification, identify various types of computers such as the super -computer, the mainframe, the mini-computer, and the micro-computer. The form and shape or size of computers may vary, but in each of the causes the main working principle or method is the same for all types of computers.

This computer is perhaps the strongest gift of science. It is helping us in business, research, management and, administration, and virtually in all fields of modern life. Its importance is so great that if it were taken out from men’s civilization, the entire process of civilization would come to a standstill.

To speak more specifically, the computer has proved to be the best aid to our thinking process, observation, the control of the economy and production processes, printing, translation, research in the laboratory and in the field and what not. In a word, the computer has increased the speed of the advance of civilization. Now we can hardly think of any tough task without it.

The computer has come to our country with immense possibilities too. Now it is giving its blessed touch in almost every sphere of life. But the general people are completely ignorant of the magic power and potential of this small machine. Therefore, if it can be familiarized to the general people at large, we will get more and more utility from it.

Uses of Computer Essay

Computer Essay Paragraph and Composition – The computer is the latest and the most excellent miracle of modern science. We now live in a computer age. The computer has become our friend, philosopher, and guide. The word computer is derived from the verb ‘Compute’ meaning to reckon or calculate something.

Actually, the computer was not invented overnight. First of all B. Pascal invented the mechanical calculating machine in 1643. In 1812 Charles Babbage invented Improved model of the mechanical computer. The first electromechanical computer was made jointly by Harvard University and IBM company in 1946. Since 1971 major improvements in computer technology have led to the development of modern day computers.

There are five components of a computer. They are the input unit, the output unit, the memory unit, the control unit, and the arithmetic unit.

A computer performs three functions, such as receiving data, processing data and emitting data.

The uses of computer beggar description in our day to day life. It performs a great service to mankind. It has really saved time, effort, labor and made our life easy and comfortable. It is also a media of education. Many things are learned by computer within the shortest period of time. Results of examinations are prepared accurately with the help of computer rapidly. Computers are widely used in medical diagnosis and treatment.

Nowadays computer is used in commerce and trade. It is also used to prepare documents, to make lists of goods, store information and to prepare budget etc. The share market can be counted instantly by the computer. In printing, thousands of books are composed with the help of the computer within a very short time. The computer is now used to control mills, factories, and various types of industries. Trains and plans are run by the computer.

The computer is a source of great income. Many developed and advanced countries export software and hardware and earn a lot of money. Even Bangladeshi people earn much money throughout computer by doing freelancing. It has also lessened our unemployment problem.

Everything has its dark sides. It causes diseases like Restitutive stress injury and weakens the eyesight of the operators. It has also a bad effect on young children and students. They play games on the computer and thus neglect their studies. It is like an addiction to many of them. Nowadays the hackers hake the security of the government computers to get their confidential files and documents to perform their evil motives. Even the security of many international organizations (Interpol, CIA) and bank accounts are being disrupted throughout hacking.

The computer has come and changed the outdated mindset . We can not do a single moment without computers. Now the computer has become a part and parcel in our everyday life. Finally, we can say that the benefits of the computer should come down to the grassroots levels.