Inside a computer you can see a large number of different components, which represent the Hardware, and so that they can have communication between them, it is necessary to use particular cables called buses. In this article we present the types of buses in computing and its function.
Types of Buses
For those who wonder What are buses in computing? it is essential to resort to its definition. The buses are a component that helps the transfer of information within the types of computer buses. All the internal components and peripheral elements of a computer communicate using the internal buses. The following are the types buses in Computer Science and its function:
Buses according to the method of sending the information
There are two categories according to this type: parallel bus and serial bus.
Parallel bus
This data bus type they are sent in byte format simultaneously, with the support of different lines that have specific functions. In computers it has been used intensively, from the bus of the same processor, hard drives, video cards and even printers.
The front side bus of Intel computing equipment is a type of bus of this class and has very particular responsibilities:
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The address lines, which are responsible for pointing out the location of the memory or the component that is going to communicate with the computer.
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The control lines are responsible for emitting signals between the components, an example of this are the indicators or status indicators.
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The data lines are responsible for transmitting the bits at random.
Serial bus
In this type of computer buses, the data or information is sent bit by bit and is restored through registers. It is made up of some drivers. It has only recently been used in buses for hard drives, expansion cards and processor.
Types of buses by their use
These types of bus in computing It has backplane type diagrams as an extension of the processor bus where the direction, control and data buses are diagrammed, which are directed towards the CPU, RAM memory, among others.
Control bus
The control bus is another of the data bus types. This controls the use and access to the address and data lines. These lines need to be supplied with particular devices that govern their use. Control signals issue commands and information between components. This bus is that it favors that there is no collision of information within the system.
Steering bus
This is a means of the processor independent of the data bus, where the memory address of the information that is being transmitted is established.
These types of buses It consists of the group of power lines that allows the establishment of an address. The memory capacity that it is capable of addressing will depend on the number of bits that make up the address bus.
Eventually, control lines may be required to indicate the availability of the bus address and this will depend on the configuration of the bus itself.
Data bus
These type of buses, is called bidirectional, since the information can enter or leave the computer. In some computers, the data bus is used to send other information in addition to the data as such, for example: address bits or condition data.
Generally, the computer outputs one character for each bus clock pulse, which results in full system clock pulses. Computers that are slow must use two clock pulses to output a single character.
Multiplexed buses
Some configurations use multiplexed type power lines for the address and data bus, this means that the same group of lines act on certain occasions as an address bus and on other occasions as a data bus, yes, never the same. way at the same time.
The one in charge of discretizing between both functions is a control line.
Types of buses for their technology
As noted above, the computer bus It is a line of communication or connection that transmits data or information. The number of lines that make up the computer buses it is important, because if a bus has 16 lines, it will be able to transmit 16 bits simultaneously.
So you can also divide the computer buses, according to your physical situation.
Internal buses
This type of bus sends information between the devices and internal components of a computer. All the internal components of a computer are connected through different electrical lines, a group of these lines is known as the internal bus.
For this type of bus internal pass data, control signals or memory addresses. Information is transmitted through the different lines, both entering and leaving data and memories.
External buses
This type of computer buses, is used to communicate or connect the computer with other peripheral devices or external memories.
In the transmission of data that are executed in the computer busesThere are two elements at work: the one that makes the transmission, which is known as the master of the transmission; and the other part, which replicates it, which is known as the transmission slave.
The pc buses Modern models can make several data transmissions or broadcasts at the same time.
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