The computer and its components, the so-called peripheral devices, are a very useful invention for man. Many of us can no longer imagine our lives without digital computing equipment. But not many of us think about how it works. And to understand it, our article will help you.
Peripheral devices:
These are any additional auxiliary devices that can be connected to the computer to extend its functionality. The technical literature defines peripherals as anything outside of the system unit. Most devices are connected via special sockets (connectors), usually located on the back of the computer system unit. The list of peripheral devices is endless. In addition to the monitor and keyboard, the well-known peripherals include:
- printer – a device for printing text and graphic information;
- Modem – communication with other computers via telephone line;
- Scanner – text or graphic information input into the computer;
- multimedia devices – input and output of audio and video signals, maintenance of CD ROM drivers
- Network adapters – communication with other computers via special computer network communication lines;
- disk drives – (CD-ROM, HDD, FDD, ZIP, etc.).
Some devices (scanner) require special adapter cards that serve as an intermediate link between the computer and the device and perform low-level control.
All peripheral devices are hardware. Some devices may be inserted inside the computer system unit (e.g. a modem, network adapter, multimedia card). To connect these devices to the computer, the computer’s main electronic board (motherboard) must have free slots (connectors, or slots) for connecting the devices. For interaction between peripherals requires the exchange of information between the main memory and external devices. This exchange is called input-output. But this exchange does not happen directly: there are two intermediate links between any external device and the RAM in the computer.
1) For each external device, the computer has a controlling electronic circuit. This circuitry is called a controller or adapter. Some controllers (such as a disk controller) can control several devices at once.
2) All controllers and adapters communicate with the microprocessor and RAM via a system data highway, usually called the system bus.
Given the importance of understanding the interaction of peripherals with the main functional modules of the computer and the constant improvement of computer hardware, it is important to have an understanding of the basic operation of the electronic modules of the system unit and the main nodes of the computer (processor, memory, video adapter). Which we will try to tell you about on our website.
P.S.: I have tried to show and describe some simple tips. I hope that some of them will be useful for you. But this is not all you can make up, so go ahead and read the site https://bip-mip.com/.
