Address,data and control busses: Microprocessor Microprocessor is processing device of every computing device. It is like an artificial brain. It needs to communicate with outer world. for example, It needs to communicate with Input devices to get data,it needs to communicate with memory to process data according to instructions written in memory and finally it needs to communicate with output devices to display the output on O/P devices. To communicate with external world, Microprocessor make use of buses. There are different types of buses used in Microprocessor: Address Bus: It is a group of wires or lines that are used to transfer the addresses of Memory or I/O devices. It is unidirectional.In Intel 8085 microprocessor, Address bus was of 16 bits. This means that Microprocessor 8085 can transfer maximum 16 bit address which means it can address 65,536 different memory locations. This bus is multiplexed with 8 bit data bus. So the most significant