What are the input methods of homework? What are their characteristics?

There are five ways to input jobs: online input, offline input, direct coupling input, spooling system input and network i

What are the input methods of homework? What are their characteristics?

There are five ways to input jobs: online input, offline input, direct coupling input, spooling system input and network input. ?

Online input is used in interactive systems, and users and systems input jobs through interactive dialogue. However, when the CPU is connected to a single device, due to the speed difference, the CPU waits for the input of peripherals, resulting in a waste of resources. ?

The setting of offline input is to solve the problem of CPU waste when a single device inputs online. The input of the device is controlled by low-speed peripherals, and the data is read and written from the disk by the high-speed host, but manual intervention is inevitable. ?

Direct coupling input directly couples the host computer and the peripheral computer through the common large-capacity external memory, which not only retains the advantages of offline input, but also overcomes the disadvantages of manual intervention, and has strong flexibility; ?

The input of spooling system is also called the input mode of simultaneous operation of online peripherals. Job writing from peripheral to memory buffer and from memory buffer to disk input well is controlled by system input process, which is different from offline input mode and direct coupling mode and is online input realized by concurrent process. ?

Network input informs a job from one host to another in the network. ?