Bus is the set of wires used for the data transfer among the components of the computer system. It connects CPU, disk-drive controller, memory, and I/O ports and enable them for data transfer. The bus is usually controlled by the microprocessor. The bus can carry different types of the information. They can carry data as well as addresses. They also carries the control signals to ensure that different components of the system are working without conflict.
Buses are categorized by the number of bits they can transfer at a time. A 8-bit data bus can transfer 8 bits of data at a time where as a 16-bit data bus can transfer 16 bits of data at a time. Buses are integral to the internal data transfer but when some external devices are added through the expansion slot they makes the electrical connection to the bus ans becomes the part of the system.
Buses are categorized by the number of bits they can transfer at a time. A 8-bit data bus can transfer 8 bits of data at a time where as a 16-bit data bus can transfer 16 bits of data at a time. Buses are integral to the internal data transfer but when some external devices are added through the expansion slot they makes the electrical connection to the bus ans becomes the part of the system.
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