In computer architecture, a bus (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers.This expression covers all related hardware components (wire, optical fiber, etc.) and software, including communication protocols. Early computer buses were parallel electrical wires with multiple hardware connections ...
A system bus is a single computer bus that connects the major components of a computer system, combining the functions of a data bus to carry information, an address bus to determine where it should be sent, and a control bus to determine its operation. The technique was developed to reduce costs and improve modularity, and although popular in ...
We should explain a few more things to really get an idea of what a system bus is like. One thing about it is the bus width.That's the number of bits that a computer bus can transfer simultaneously.
The data bus, which is a bidirectional path, carries the actual data between the processor, the memory and the peripherals. The design of the system bus varies from system to system and can be specific to a particular computer design or may be based on an industry standard.
It is a bidirectional bus, as it also transmits response signals from the hardware. The Primary Buses There are generally two buses within a computer. The first is the internal bus (sometimes called the front-side bus, or FSB for short). The internal bus allows the processor to communicate with the system's central memory (the RAM).
The system bus refers to a single computer bus that interconnects the CPU (central processing unit), the system memory and the other major components of a computer. A computer bus transfers data between computer components. The transfer speed of a system bus determines the overall performance of a computer.
The second one is a slower bus for communicating with things like hard disks and sound cards. One very common bus of this type is known as the PCI bus. These slower buses connect to the system bus through a bridge, which is a part of the computer's chipset and acts as a traffic cop, integrating the data from the other buses to the system bus.
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