Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are
The DMA control waiting for the microprocessor to finish execution of the program and then takes over the buses
While the microprocessor is executing a program an interface circuit takes over control of address, data, control buses when not in use by microprocessor
Data transfer takes place between the I/O device and memory during every alternate clock cycle
DMA controller taking over the address, data and control buses while a block of data is transferred between memory and I/O device
EXAMIANS