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I added the fundamental definition (most texts that I've seen miss this) |
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|archive-url = https://web.archive.org/web/20180117151300/https://books.google.com/books?id=YVi8HVN-APwC&lpg=PA27&dq=computer%20buss%20-sam&pg=PA27#v=onepage&q=computer%20buss%20-sam&f=false
|archive-date = January 17, 2018
}}</ref> (historically also called '''data highway'''<ref name="Hollingdale_1958"/> or '''databus''') is a communication system that transfers [[Data (computing)|data]] between components inside a [[computer]], or between computers. At its most fundamental level, a bus is
In most traditional [[computer architecture]]s, the CPU and main memory tend to be tightly coupled, with the internal bus connecting the two being known as the [[system bus]]. In systems that include a [[Cache (computing)|cache]], CPUs use high-performance system buses that operate at speeds greater than memory to communicate with memory. The internal bus (also known as the internal data bus, memory bus or [[system bus]]) connects internal components of a computer to the mother board. [[Local bus|Local buses]] connect the CPU and memory to the [[expansion bus]], which in turn connects the computer to peripherals. Bus systems such as the [[SATA]] ports in modern computers support multiple peripherals, allowing multiple hard drives to be connected without an [[expansion card]].
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