What is system bus? Explain different types of system bus in detail.

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IN computerarchitecture is a bus is a communication system that transfers data between components inside a computer or between computers. This expression covers all related hardware components and software are including communication protocols.

The bus consists of three main parts
1.control Bus:                                                                                                                                                                                                 The control bus carries that control signal. The control signal is used for controlling and coordinating the various activities across the computer. It is generated from the control unit within the CPU. The control unit generates a specific Control Signal for every operation, such as memory rod or input Joulut operation. This signal is also used to identify a device type, with which the microprocessor communicates.

2. Address Bus:                                                                                                                                                                                                    Address bus carries the memory the address within the device allows the CPU to reference memory locations within the device. It connects the CPU and another peripheral and carries only the memory address. The address bus contains the connections between the processor and memory that carry the signals relating to the addresses which the CPU is processing at that time, such as the locations that the CPU is reading from or writing to. It address but could carry 8 bit at a time, the CPU could address only. (2^8) 256 bytes of RAM.
3.Data Bus:                                                                                                                                                                                                             Data bus transfer data from one location to another across the computer. The meaningful data which is to be sent from a device is placed on these lines. The CPU uses a data bus to transfer data. It May 16 or 32-bit data bus. It is an electrical connects the CPU, memory, and other hardware devices on the motherboard. These lines are bidirectional data flow in both directions between the processor and memory and peripheral devices

 

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