A modern data processing system consists of several electronic devices. With special typewriters, the given task is translated into the language of the computer on cards or strips of paper. The task is given to the machine with the arithmetic instructions; a magnetic drum picks them up using electrical impulses. Have the calculators done their job?, the answer goes to a high-speed printer, which translates the electrical impulses into plain text, or in a special machine, the so-called plotter, which represents the solution in the form of a curve.
electronic calculators, so-called computers, solve arithmetic problems in seconds, that would take a person days or weeks. Computers help engineers, to design new planes, to test and pass through the air. The orbit of a space capsule to the moon or to Mars is calculated by computers and corrected if necessary. Computers evaluate opinion polls and calculate wages for thousands of workers. In all branches of science, Technology and economy are worked with computers today. We often come across the abbreviation EDV; she means: electronic data processing.