Computer Learning Free Full Course In English With History||Part 1.

Calculator or computer is a device that can follow specific instructions for rapid mathematical calculation.


The word computer comes from the Greek counting word. Calculation means or calculation count. And the computer terminology calculator means. But now computer is not counted. Computer is a device that provides information and analysis and processes through various processes. The development of civilization and its rapid progress now have strong implications for mathematics and computers. The first computer in Bangladesh came in 1964.



History

In the prehistoric era, various efforts to discover the calculation instrument are considered as computer history. People in ancient times realized that muscles, jackfruit, ropes etc. Abacus, an ancient counting machine, is considered to be the first device in computer history. It was discovered in Babylon in 2400 BCE in Babylon. The composite machine is replaced by the calculator calculator frame. Abacus was created in 450/500 BC as a counting machine in Egypt or China.

In 1616, Scottish mathematician John Nepe used a break or a rack for the printing or counting. This stone is known as John Napier's bone. In 1642, 19 year old French scientist Blaise Pascal invented the first mechanical calculator. He started the process of adding wheel wheel or gear tooth. 1671 German mathematician Gottfraud von Lobin Pascal created a more advanced mechanical calculator with the ability to share and share the wheel and rack based on machine. She named Machine Rechoning Mechine. Later in 1820, Thomas De Cameron modified the machine and made Libby instruments popular.At the beginning of the nineteenth century, the concept of creation and use of a modern machine (which can only be calculated physically, without any intelligence, can be calculated mathematical calculations) introduced the first Charles Barbez. While working with this difference engine (in 1833), he named the difference engine, he gained an idea of ​​an advanced and universal instrument called analytical engine. But he can not afford the necessary tools and finances.

The main source of computer science is Alan Turing's first theoretical and later practical research. From the middle of the twentieth century, modern computers began to develop. In 1971, microprocessors developed rapidly due to the development of microprocessors. Various types of personal computer or PC price are different. He has searched many operating systems, program languages, numerous real package programs. There is a broad expansion of computer networks and the Internet and related services and services. Many institutional and non-formal computer education and research institutes have been set up to provide computer education. In recent times, computer and IT technology has acquired a large part of business and business, and jobs have become computer-based.

After the discovery of American Intel Corporation microprocessor in 1971, the microprocessor-based computer started coming to the market. Since then, a great revolution has gained the computer's shape and skill. In 1981, after IBM Computer Personal Computer or PC, it was invented by a high power microprocessor and it was created in a powerful PC. There is no limit to the creation of IBM compatibility of IBM computers, so the cost of computers has decreased and its usage is increasing gradually. At the same time, IBM Computer and Apple Computer Inc have discovered their Apple-Macintosh computer market, but due to computer expenditure, Apple did not conform to any generosity, Macintosh did not get much popularity, which was not very popular. However, due to some special features, Apple Macintosh.