There are different types of data processing systems and each performs one or more required operation(s) on data by means of various devices. When a machine performs most of the required operation, the system is called an automatic data processing (ADP) system. More particularly, when that machine is an electronic digital computer, the system is described as an electronic data processing (EDP) system or simply as a computer system.
In the broadest terms, an electronic data processing consist of ; hardware, software, and people ware.
In electronic data processing, a user does not have to deal directly with the physical devices( hardware of the EDP system. Instead a special service programs, stored in the computer memory, provide an interface between the user and the equipment . These programs, called systems software, simply the task of the programmer and. the applications software control the use of the hardware.
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