Information / data

Information

Information , Refers to audio message 、 news 、 Objects transmitted and processed by the communication system , It generally refers to all the contents spread by human society . People get 、 Identify different information in nature and society to distinguish different things , To understand and transform the world . In all communication and control systems , Information is a form of universal connection .1948 year , Mathematician Shannon is entitled “ The mathematical theory of communication ” In his paper, he pointed out that ：“ Information is something used to eliminate random uncertainty ”. The most basic universal unit for creating all things in the universe is information .

Modern science refers to the news sent by things 、 Instructions 、 data 、 Symbols, etc . People get 、 Identify different information in nature and society to distinguish different things , To understand and transform the world . In all communication and control systems , Information is a form of universal connection .

news 、 News .

data

data （data） Is the result of fact or observation , It is a logical induction of objective things , It is the raw material used to express the objective things .
Data can be consecutive values , Like sound 、 Images , It's called analog data ; It can also be discrete , As a symbol 、 written words , It's called digital data .
In computer system , Data in binary information units 0、1 Formal representation of .

Data refers to the symbols that record and identify objective events , It's about the nature of things 、 A physical symbol or combination of these physical symbols for recording, as of state and interrelationship . It's recognizable 、 Abstract symbols .

It not only refers to numbers in a narrow sense , It can also be words with certain meaning 、 Letter 、 Combination of numbers and symbols 、 graphics 、 Images 、 video 、 Audio etc. , It is also the attribute of objective things 、 Number 、 Abstract representation of location and its relationship . for example ,“0、1、2…”、“ Yin 、 rain 、 falling 、 The temperature ”、“ Student records 、 Transportation of goods ” All these are data . Data becomes information after processing .

In computer science , Data is the general name of all the symbolic media that can be input into the computer and processed by the computer program , It's used for input to an electronic computer for processing , A meaningful number 、 Letter 、 Symbol and analog quantity, etc . The objects stored and processed by computer are very extensive , The data representing these objects becomes more and more complex .

Data is numerical , That is, we observe 、 Experimental or calculated results . There are many kinds of data , The simplest thing is numbers . Data can also be text 、 Images 、 Voice etc. . Data can be used for scientific research 、 Design 、 Verification, etc .

Get through investigation or experiment , Values that have not been effectively processed .

The relationship between information and data

Information and data are linked , There are differences. . Data is the form and carrier of information , It can be a symbol 、 written words 、 Numbers 、 voice 、 Images 、 Video etc. . And information is the connotation of data , Information is loaded on data , Make a meaningful interpretation of the data . Data and information are inseparable , Information depends on data to express , Data vividly and concretely express information . Data is symbols , It's physical , Information is the data obtained after data processing and has an impact on decision-making , It is logical and conceptual ; Data is the form of information , Information is a meaningful representation of data . Data is the expression of information 、 carrier , Information is the meaning of data , It is the relationship between form and quality . The data itself doesn't make sense , Data becomes information only when it affects the behavior of entities