Nowadays, almost everyone has heard and uses computers for different purposes. And now many people in the world know how to use computers to connect to the Internet, use computer programs, or play computer games. Most of those people who know how to use computer programs think that they know computers and they forget who is preparing these programs and how. People who are working in the computer science fields are responsible of developing these programs and make them from scratch.

Also many people think only about the personal computers that we use at homes or in offices. But that is not all about computers, there are many and different kind of computers used for different purposes, like microwaves, cellular phones, cars, factories, and nuclear centres.

Computer science is a relatively young academic field that has matured rather quickly due to the rapidly changing technological environment. Computer professional today need and excellent education foundation to enable them to deal with this ever-changing world of computer software and hardware. The computer science is the science of solving problems with the aid of a computer. Because of the importance of the computes to the modern world, computer science has now become an extremely exciting field of study and is likely to remain one of the most important fields for centuries.

Computer scientists must be able to think logically, and have good communication skills and good knowledge in Mathematics. They often deal with a number of tasks simultaneously. The ability to concentrate and pay close attention to detail is important.

Computer science like other academic disciplines has a collection of related sub fields that share a fundamental of knowledge and practice. Here are some of the areas that lie within the broad concept of computer science, but it is only one aspect of the discipline:

Programmer/Analyst
As a Programmer or Analyst, you design and update the software that runs the computer. The operating system (OS) software integrates all the components that make up the computer-the hard disks that store data; the devices that input data, such as a keyboard, mouse, or graphics tablet; the video monitor; peripheral devices such as scanners, printers, and CD-ROM players; and the application software. The software provides the bridge between the application software (such as spreadsheets or word-processors) and the machine itself.

Artificial Intelligence
It is one important area of study. Specialists in this area are trying to understand whether machines can like people, or perhaps are trying actually creating intelligent machines. And there is a extremely great development in this field.

Some Employers of Computer Science and IT Graduates:
· Consulting firms
· Banks and investment firms
· Business and industry
· Colleges/universities
· International agencies
· Military
· Research and development firms
· Telecommunications organizations
· Professional and technical journals

What Is Information Technology?
IT stands for Information Technology, a field in computer that covers all aspects of managing and processing information. IT professionals design, develop, support and manage computer software, hardware, the Internet, and networks. IT workers help to ensure that computers work well for people. Nearly every company, from software design firm, to the biggest manufacturer, to the smallest store, needs IT workers to keep their business running smoothly.

Some works of the IT worker professions:
Jobs in information technology are found in industry, government, business, and the service sector at all levels. IT students take positions with job titles like Web master or content developer, network or systems administrator, facilities manager, user support specialist, database developer or administrator, multimedia developer, systems analyst, application developer, interface design specialist, testing and quality assurance specialist, instructional designer, or technical marketing representative.

The IT graduates design, build and/or maintain the firm's local area network and gateways to the Internet; they specify, procure, deploy and maintain computer hardware and software; they build and maintain Web sites for both Internet and intranet solutions; they develop database applications and Web front-ends to those databases. In short, they identify and take care of the computing and information needs of their users.

Systems Analysts
Systems analysts (SAs) use their knowledge and skills in a problem solving capacity, implementing the means for computer technology to meet the individual needs of an organization. They study business, scientific or engineering data processing problems and design new solutions using computers. This process may include planning and developing new computer systems or devising ways to apply existing systems to operations still completed manually or by some less efficient method. SAs may design entirely new systems, including both hardware and software, or add a single new software application to harness more of the computer's power. They work to help an organization realize the maximum benefit from its investment in equipment, personnel, and business processes.

Database Administration
As a Data Analyst, Database Developer, or Repository Architect, you're responsible for developing storage and retrieval systems for your organization's raw data. It is your job to determine the best way to store data, typically by interviewing those who use it. Then you'll create or modify the database accordingly

Software Engineer
As a Software Engineer, you may be involved in software design from the beginning: looking at the problem or market need and determining the best set of features to address it. You also perform cost/benefit ratios to determine which features can be added easily and inexpensively, and which require too much work to justify a limited return. You'll document the plan in a product specification document.

The Difference Between Computer Science and Information Technology:
A very common question is "What's the difference between computer science and information technology?" While information technology has strong roots in computer science, there are some important differences, which can help to define IT.
Information technology differs from computer science in many respects. First, there is a stronger emphasis on computer programs design in computer science than in information technology. The information technologist clearly needs to be able to build computer applications, but the typical IT project involves combining together available programs with high-level environments, rather than writing large programs from scratch using traditional programming languages. Computer science also requires significantly more mathematics and science than information technology, mainly because extending the underlying technology requires a more thorough mathematical foundation than applying that technology. Finally, the computer science curriculum is "deeper" in that there are more required prerequisites for the intermediate and advanced courses. Information technology has a flatter prerequisite structure, which facilitates the transfer of students into IT from non-technological majors. For this reason, if you can't decide between computer science and information technology, start in computer science because CS credits will transfer to IT, but not all IT credits transfer to CS. But if you believe your mathematics is no good and want to study computer you can choose IT.