What is the main purpose of computer networks?

Computer networks have many uses, the three most important ones are: Data communication, resource sharing, and distributed processing.

1. Data communication

Data communication is the most basic function of computer network. Computer network provides powerful communication for users distributed in different regions. means. Users can conduct email transmission, news release, e-commerce activities, etc. through computer networks. Using this feature, units or departments scattered in various regions can be connected through computer networks for unified deployment, control and management.

2. Resource Sharing

Resources” refers to all software, hardware and data resources in the network. “Sharing” refers to all users in the network can Enjoy these resources in part or in full.

For example: databases of some regions or units (such as air tickets, hotel rooms, etc.) can be used by the entire network; software designed by some units can be used where needed for a fee. Call or call after completing certain procedures; some external devices such as printers can be oriented to users, so that places that do not have these devices can also use these hardware devices.

If resource sharing cannot be achieved, all regions need to have complete A set of software, hardware and data resources will greatly increase the investment cost of the entire system.

3. Distributed processing

When a computer is overburdened time, or when the computer is processing a certain work, the network can transfer new tasks to idle computers to complete. This processing can balance the load of each computer and improve the real-time nature of problem processing; for large comprehensive problems, the problem can be Each part is handled separately by different computers, making full use of network resources to expand the computer's processing capabilities, that is, to enhance practicality.

For solving complex problems, multiple computers are used together to form a high-performance computer System, this kind of collaborative work and parallel processing is much cheaper than purchasing a high-performance mainframe computer separately.

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