A computer is the only electronic device which is found everywhere. It is used for many purposes. In-fact we can say that computers are used to move this life. It provides entertainment and in almost all the industries computers are used. The ontario colleges is keeping on increasing. In 1980’s only 50,000 computers were sold every year but now more than 50,000 computers are sold every day. One can perform many tasks with the help of computer. Since computer is an electronic device it can get into trouble very often. The problem may be related to either hardware or software. The person who is expert in repairing the system is called as system technician. These system technicians are more in number in Ontario. One must finish computer technician courses ontario to become a computer technician. These professionals are expert in software and hardware installation. The massage therapy colleges ontario courses ontario is constantly increasing. Since this job fetches more money, people of Ontario choose computer technician courses ontario. Even in developing countries computers play an important role. Traffic maintenance, mobile technology, ticket reservation and in many other places computers are used. One cannot live in this world without using a computer. It has become a part of our life. The invention of computers has changed this world to a great extent. It has also provided job to many people. Computers are used to perform many tasks at the same time. It is very powerful and it is used in the development of a sector. Still many people do not know about computers. The computer literacy rate in the developed countries is still around 50%. Computer literacy is the basic knowledge about computers. Awareness must be created among people and the advantages of computers must be clearly explained to them.