Microprocessor
Consider the following statements: Arithmetic Logic Unit (ALU) 1.Performs arithmetic operations 2.Performs comparisons. 3.Communicates with I/O devices 4.Keeps watch on the system Which of these statements are correct?
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
While the microprocessor is executing a program an interface circuit takes over control of address, data, control buses when not in use by microprocessor
The DMA control waiting for the microprocessor to finish execution of the program and then takes over the buses
EXAMIANS