Computer Science

Computer Science ( abbreviation CS )

is a systematic study of information and calculation of the theoretical basis and their use in a computer system how to achieve academic and practical application of technology. It is often described as for those who create, describe and transform information in the algorithm systematic research process. Computer Science contains a lot of branches in the field ; Some emphasize specific calculation results, such as computer graphics, while some is to explore computational problems in nature, such as computational complexity theory ; There are some areas to focus on how to achieve the calculation, such as programming language theory is the study of description of the calculation method, and the programming is an application-specific programming languages to solve specific computational problems, human-computer interaction is focused on how to make computers and computing becomes a useful, easy to use, as well as anytime, anywhere people use.
Sometimes be mistaken for public utilities (such as computer science is to solve computer problems IT ), or just with the experience in the use of computers, such as playing games, Internet or word processing. In fact, computer science concern, not only to understand the implementation of a similar nature games, browser software programs, but also to create new programs or improve existing programs through existing knowledge.

History of computer science:

The real history of computer is started in 19th century when first calculating machine was invented 

These calculating fixed numerical tasks machines, such as the abacus , have existed since ancient Greek times. Wilhelm Schickard in 1623 designed the world's first mechanical calculator, but did not complete its construction.  Blaise Pascal designed and built the world's first mechanical calculator can work in 1642 Pascaline . Ada Lovelace •  Charles Babbage in the Victorian era design difference engine . around 1900, drilling machines  come out. However, these machines are limited to only a single task is completed, or at best, a subset of all possible tasks.

To the 1940s, with the newer and more powerful computing machines were invented, the term "computer" began to be used to refer to those machines rather than their ancestors. The concept of the computer is becoming clearer, it is not just for math, the whole field of computer science has also extended to the computing research. 1950s to the early 1960s, computer science began to be established for different types of academic disciplines.  The world's first point by a computer science degree from Purdue University established in 1962.  With the advent of practical computer with many computing applications are gradually changing their own way research in different fields become.

Although initially a lot of people do not believe that computers could be in the field of scientific research, but the next 50 years is gradually being recognized by academia.  IBM is one of the participants in the computer science revolution that period. IBM 704 and the IBM 709 computer in the period after the exploration period, IBM (International Business Machines acronym) published widely used. "However, work is still using the IBM PC is a very frustrating thing if you make a mistake in a letter of instruction, the program will crash, and you have to start all over again." the late 1950s, computer science discipline is still in development stage, the problem at the time was a very common thing.

Over time, computer science and technology on the availability and effectiveness are significantly improved. Modern society has witnessed a major shift from merely used by computer professionals to be accepted by the majority of users. Initially, the computer is very expensive and slow speed.