What is the meaning of the iUnix interface in the computer
This article will explain in detail what is meant by the iCompo interface in the computer. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.
The CPU interface is the basic input and output port, which is prepared for each device action, and each device will have a special address to deal with its own input and output information; the connection and data exchange between iUnix and external devices and memory need to be realized through the interface device, the former is called [Icano] interface, and the latter is called memory interface.
The iCompo interface is simply a basic I / O port, which is prepared for each device action.
Input/output O is the abbreviation of I / O, that is, I / O port. Each device has a dedicated Imap O address, which is used to process its own input and output information. The connection and data exchange between CPU and external devices, memory and data need to be realized through interface devices, the former is called Icano interface, and the latter is called memory interface. The memory usually works under the synchronous control of CPU, and the interface circuit is relatively simple, but there are many kinds of Icano devices, and the corresponding interface circuits are also different. therefore, it is customary to refer to the interface only refers to the Icano interface.
The concept of Ipar 0 interface
1. Classification of interfaces
The function of the Icano interface is to realize the connection between the CPU circuit and the peripheral equipment through the system bus. According to the complexity of the circuit and equipment, the hardware of the Icano interface is mainly divided into two categories:
(1) Icano interface chip
Most of these chips are integrated circuits, which input different commands and parameters through CPU, and control related Imax O circuits and simple peripherals to operate accordingly, common interface chips such as timing / counter, interrupt controller, DMA controller, parallel interface and so on.
(2) Icano interface control card
There are several integrated circuits according to a certain logic to form a component, either directly with the CPU on the motherboard, or a plug-in inserted in the system bus slot.
According to the connection object of the interface, they can be divided into serial interface, parallel interface, keyboard interface and disk interface.
2. The function of the interface
Due to the wide variety of peripherals of the computer, almost all of them use electromechanical transmission equipment, so CPU has the following problems when exchanging data with Icano equipment:
Speed mismatch: the speed of the IWeiO device is much slower than that of the CPU, and their speed varies greatly due to different types, such as the transmission speed of the hard disk is much faster than the printer.
This is the end of the article on "what does the iCompo interface in the computer mean?" I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.
