Computer

       At the earlier time, Computer was refer to human computer, a man that which the job was count or do arithmetic calculations, with or without assistive devices.

       Along with the changing times, people start trying to develop tools to perform arithmetic calculations that are considered to be quite difficult. Starting from simple tools such as the abacus evolved into mechanical/electrical tool, which then become more dominant in the calculation job which was later named computer.

       So the computer was originally a calculating machine. The work done with computers almost always associated with problems of arithmetic. But then the computer use for many tasks and occupations, not just those related to mathematics alone. Computers are now used in almost every field of work. Development of Internet technology is also increasingly expanding use of computers.

       By the time, definition of computer as a calculating machine is no longer appropriate given to today's modern computers. Computers today can be interpret as the equipment used to process data into specific information, according to the procedure have been formulated. Such data may include numbers, letters or words and the resulting information can be signed articles, graphics etc. Another definition from Wikipedia: a Computer is a programmable machine designed to sequentially and automatically carry out a sequence of arithmetic or logical operations.