data is the result of fact or observation, the logical induction of objective things, and the raw raw material used to express objective things.
data is the expression and carrier of information, which can be symbols, characters, numbers, sounds, images, videos, etc.
data and information are inseparable, data is the expression of information, and information is the connotation of data.
data itself is meaningless, and data becomes information only when it has an impact on the behavior of entities.
data can be continuous values, such as sounds and images, which are called analog data. It can also be discrete, such as symbols and characters, which are called digital data.
in a computer system, data is represented in the form of binary information unit .1.