# Definition and Basic Concepts of Digital Technology
The term digital comes from the word digit, meaning a number—specifically, the numbers 0 through 9—and essentially refers to anything represented, processed, stored, or transmitted as numerical values, fundamentally using the binary number system, which consists of only two symbols: 0 and 1.
Every kind of information—whether text, sound, images, motion, color, or signals—is converted into sequences of these numbers so that it can be understood, processed, and stored by electronic devices.
Unlike an analog system, which operates using continuous signals whose values can change smoothly and continuously, like actual sound waves or the needle on a temperature gauge, a digital system breaks information down into discrete units with definite, separate values. These units are what later became known as digital data.
Broadly speaking, the digital concept is not merely a numerical format or computer technology. It encompasses the entire process, methods of operation, tools, techniques, and even patterns of life built on the processing of information based on numerical codes.
Its primary characteristics are precision, consistency in the form of information, the ease of copying without any loss in quality, and the ability to combine different types of information into a single, uniform format.
For example, written messages, photos, audio recordings, and videos may have different original forms, but after digitization, they all become sequences of numbers that can be managed in similar ways. The conversion of physical or analog formats into numerical form is called digitization, and this is the foundation on which the world as we know it today is built.
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