Address bus

A collection of wires between the processor and main memory used to communicate the physical location (address) of data in main memory.
A type of communication of the microprocessor which involves sending and receiving of data or instructions.
An address bus is a computer bus, used by CPUs or DMA-capable units for communicating the physical addresses of computer memory elements/locations that the requesting unit wants to access (read/write).
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Its basically the bus that tell the CPU how much and where the memory is so the CPU can write and read data to the memory through the data bus
 
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