Computer System

     Computer terminology comes from the Latin "Computare" which means to count. Therefore, any tool that actually serves as a means of calculating such summing machine, calculator, or even simpoa (abacus) can technically be called a computer. But in its development, the development of computers have different meanings.
Computers are electronic data processing equipment that works and is controlled by a set of instructions (program) (Blissmer, 1985). The computer system is a collection of elements that is human, hardware, and software that interact to achieve the goal of getting useful information, ease of work, speed and other purposes.
There are three main components in the human system as a user's computer, hardware and software (Figure 3.8). If one does not exist then the computer system to not work. For example if there are only human and hardware, the computer system does not work because no program that helps people to run the hardware.