While talking about a computer, the bus called information bus, the handle bus, or nearby bus is just a data link between several devices. It is used to interconnect the computers and its other parts for communication.
For example, a coach allows a PC processor to speak using perhaps a movie card or the memory to speak using the storage.
Computer systems generally consist of three main parts: the central processing unit (CPU) that processes data, memory that holds the programs and data to be processed, and I/O (input/output) devices as peripherals that communicate with the outside world.
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Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a Scottish-born scientist, inventor, engineer, and innovator who is credited with patenting the first practical telephone.