What does 255000 coding mean?

The first digit 1 and the second digit 0 represent the province (autonomous region, municipality directly under the central government);

The third digit 0 represents the postal area (a province divides several postal districts, i.e. mail distribution, transportation network);

The 4th digit, 8, represents the county (city);

The last 2 digits, 5 and 9, represent the post office and its drop-off area.

The zip code structure diagram is as follows:

The first 2 digits represent provinces, municipalities and autonomous regions, and the 3rd digit represents the first place.

To put it simply, it is to use numbers or letters to number the object for the object, and the advantages:

1. It is convenient to file and organize, especially in the electronic management system;

2. Digital coding is easier to manage, no matter who carries out the coding is the same, the management is convenient, no matter how the personnel are changed, the procedures and affairs will not be chaotic;

3. Detailed corresponding information can be obtained from the numbers, such as year, month, day, or even hour, minute, second, unit, department, filer, etc.;

4. After being familiar with the digital encoding, you can quickly locate the file;

5. Digital coding can prevent leakage, and it is difficult for people who do not understand the coding system to understand the meaning of coding, and they cannot find the information they need in the vast number like a maze.

In short, digital coding can bring a lot of convenience to life.

Simplify knowledge and make it easy to remember.

Nixon: Oh, your parents-in-law are ok to themselves.

China's postal code before the old talk code repentance and dismantling with a four-level six-digit coding structure.

The first two digits indicate provinces (municipalities, autonomous regions); The first three digits indicate the postman touching area; The first four digits indicate the county (city); The last two digits indicate the delivery office.

The third and fourth represent prefectures, cities, and prefectures. The fifth and sixth represent a county. A town or a neighborhood in which you live.

A postal code is a special code that represents the post office (office) where mail is delivered. It is also the communication code of residents and units within the scope of this bureau (office). The postal code consists of 6 Arabic numerals, such as 529000.

Its first two digits indicate Guangdong Province (autonomous region, municipality directly under the central government); The third digit indicates the zip code (Jiangmen); The fourth digit indicates the number of the city (county); The last two represent the mail delivery office and the office.

The first two digits indicate provinces (municipalities, autonomous regions);

The first three digits indicate the postal area;

The first four digits indicate the county (city);

The last two digits indicate the delivery office.

10: Beijing.

100: Beijing Post Office.

1008: Main Town.

72;Delivery Bureau.

Source coding refers to the coding of the signal, which mainly refers to the interface that comes in. Channel coding is the coding of the signal channel, which generally refers to the circuit in the machine.

Clause.

The first and second digits represent provinces (autonomous regions, municipalities directly under the Central Government, and special administrative regions).

Clause. The third and fourth digits represent the city (the summary code of the districts and counties to which prefecture-level cities, autonomous prefectures, regions, leagues and municipalities directly under the central government belong). Among them, 01-20 and 51-70 represent prefecture-level cities; 21-50 indicates regions (autonomous prefectures, leagues).

Clause. The fifth and sixth digits represent the county (district, county-level city, flag). 01-18 indicates prefecture-level cities, autonomous prefectures, regions, and county-level cities under the jurisdiction of the League; 21-80 indicates the county (flag); 81-99 indicates county-level administrative units directly under the central government of provinces.

Exception is made for the previous old ID card

18-digit ID number:

1 6 digits are regional, where the digit is the provincial level, the digit is the prefecture, the city level, the digit is the county, district level. Such as 13 (Hebei Province) 04 (Handan City) 29 (Yongnian County).

7 14 digits are the date of birth.

15 17 digits for the sequence number, is the county, district-level ** under the jurisdiction of the police station allocation code, each police station allocation code for 10 consecutive numbers, such as "000-009" or "060-069", of which the odd number is the male distribution code, the even number is the female distribution code, if there are more than two people in the same year, the same month, the same day, if there are more than two people.

II. III.

Fourth, the fifth allocation code. For example, 007 is a boy, and there are at least two boys born on the same month, month, and day as him, and the last four are 001* and 003*

18 bits are check digits (identification codes), which are calculated by complex formulas and are generally automatically generated by computers. It is a test of the first 17 digits**, if you change the previous number and the following validity** does not respond to the change, it will be judged by the calculation software as an illegal identity positive number. x is also a check of **.

15-digit ID number:

1) 1 6 digits for the region**.

2) 7 8 digits are the year of birth (2 digits), 9 10 digits are the month of birth, and 11 12 digits are the date of birth.

3) The 13th and 15th digits are sequential numbers, and can judge gender, odd numbers are male, even numbers are female.

The meaning of the 18-digit ID number:

1-2 provinces, autonomous regions and municipalities directly under the central government**;

3-4 prefecture-level cities, leagues, autonomous prefectures**;

5-6 counties, county-level cities, districts**;

7-14 dates of birth, e.g. 19670401 represent April 1, 1967;

15-17 digits are sequential numbers, of which 17 digits (penultimate digits) are singular for males and even for females;

18 bits are the check digits, 0-9 and x. As the check code of the tail number, it is calculated by the number compilation unit according to a unified formula, the result of the calculation is 0-10, if someone's tail number is 0 9, there will be x, but if the tail number is 10, then you have to use x instead, because if you use 10 as the tail number, then the person's ID card becomes 19 digits. X is the Roman numeral 10, and X is used instead of 10.

For example, the meaning of the ID number 130503 19670401 0012: 13 is Hebei, 05 is Xingtai, 03 is Qiaoxi District, the date of birth is April 1, 1967, the sequence number is 001, and 2 is the check code.

The meaning of the 15-digit ID number:

1-2 provinces, autonomous regions and municipalities directly under the central government**;

3-4 prefecture-level cities, leagues, autonomous prefectures**;

5-6 counties, county-level cities, districts**;

7-12 digits of birth, for example, 670401 represents April 1, 1967, which is the first difference with 18 digits;

13-15 digits are sequence numbers, of which 15 males are singular and females are even;

The second difference from the 18-digit ID number: there is no check digit for the last digit.

Example: 130503 670401 001; 13 is Hebei, 05 is Xingtai, 03 is Qiaoxi District, the date of birth is April 1, 1967, and the serial number is 001.

The meaning of the digits of the ID number.

1) The first digit indicates: ** of the province;

2) The first digit indicates: ** of the city;

3) The first digit indicates: ** of the district and county;

4) The 7th 14th digit indicates: year, month, day;

5) The first digit indicates: ** of the police station where it is located;

6) The 17th digit indicates gender: odd numbers indicate male, even numbers indicate female;

7) The 18th digit is the check code: some say it is the personal information code, which is used to check the correctness of the ID card. The check code can be a number of 0 9, and sometimes it is also represented by an x (the tail number is 10, then it must be replaced by an x).

It is generally randomly generated with the computer.