Introduction and Explanation Computers

Computers in the term has different meanings for everyone. The term comes from the Latin "computare" which means to calculate / to reckon

According Blissmer (1985), the computer is an electronic device capable of performing several tasks, namely to receive input, process the input according to the instructions given, keep the commandments and the results of its processing, and provides output in the form of information.

According to Sanders (1985), the computer is an electronic system to manipulate data quickly and accurately as well as designed and organized in order to automatically receive and store input data, process it, and produce output based on instructions that have been stored in the memory. And many more experts who are trying to define it differently on the computer. However, in essence it can be concluded that the computer is
an electronic device that can receive input, process input, provide information, using a program stored in computer memory, can store programs and data processing, and works automatically.

From the definition, there are three important terms, namely the input (data), data processing, and information (output). Data processing using a computer is known as electronic data processing (PDE) or elecronic data processing (EDP). Data is a collection of events that removed from a fact (fact), can be numbers, letters, special symbols, or combination of all three. The data still can not tell you much that needs to be further processed.

Data processing is a process of manipulation of data into a form that is more useful and more means, namely in the form of an information. Thus, information is the result of a data processing activities that provide a more meaningful form of a fact. Therefore, electronic data processing is the process of manipulation of data into more meaningful form of an information by using an electronic device, namely a computer.