When Xiamen CIGNA Electronic Chart HM-58 17 is updated, the downloaded basic data packets, updated data packets,

According to the description, if the data update software has been downloaded, this package cannot be deleted.

Firmware upgrade can optimize some functions of the machine, improve the mobile phone system and make the system more stable and smooth. In order to better ensure the use of mobile phone functions, it is recommended to upgrade the mobile phone to the latest firmware version when the machine prompts the software to update.

It has been five years since the National Bureau of Statistics' last national census of basic institutions (200 1) entered the market. The average life span of private enterprises in China is only 19 months. In addition, due to the change and upgrade of telephone numbers and area codes and the migration of registered addresses of enterprises, the data accuracy of these enterprises is only about 20% ~ 40%.

This kind of enterprise data information, which comes from government channels, has a long collection and release period and low accuracy, and needs secondary processing, verification and standardization before it can be used, is called static data or "basic database" in the international data community.

Extended data:

The structure of data packets is very similar to that of ordinary letters. The destination IP address is used to indicate who the packet is sent to, which is equivalent to the address of the receiver. The source IP address indicates where this packet is sent, which is equivalent to the sender's address; Payload data is equivalent to the contents of the letter. ?

It is because of this structure that computers with TCP/IP protocol can communicate with each other. When we use a network based on TCP/IP protocol, what is actually transmitted in the network is data packets. Understanding data packets is of great significance to the network security of network management.

Baidu Encyclopedia-Data Packet