Postal code usually consists of Arabic numerals, which represents the special code of the post office that delivers mail, and is also the communication code between residents and units within the delivery range of the post office.
China postal code adopts four-level six-digit coding structure. The first two figures represent provinces (cities, autonomous regions); The first three digits indicate the postal area; The first four digits represent counties (cities); The last two digits indicate the office.
2. License plate
Vehicle number plate is a number plate hung on the front and back of the car respectively, and the commonly used materials are aluminum, iron sheet, plastic or paper.
The license plate is the registration of the number and information of each car. Its main function is to know the area of the vehicle through the license plate, and also to find the owner and registration information of the vehicle according to the license plate.
3. Resident ID number
The resident identity card of the People's Republic of China is an effective national legal document to prove the personal identity of citizens.
Citizenship number is a characteristic combination code, which consists of 17 bit ontology code and check code. The order from left to right is: six-digit address code, eight-digit date of birth code, three-digit serial code and one-digit check code.
4. Shelf life
The meaning of shelf life on food labels refers to the date when the quality of food is guaranteed under the conditions specified in the labels.
The function of digital coding of extended data in life;
1, which is easy to file, especially in electronic management system, digital coding can be used to better distinguish the storage areas of documents, and it can be easily found by digital coding when searching.
2. Digital coding is easier to manage.
3. Detailed corresponding information can be obtained from numbers, and the time when things happen can be recorded in more detail by using digital coding.
Baidu encyclopedia-postal code
Baidu encyclopedia-license plate
Baidu Encyclopedia-Resident ID Number
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