MICROPROCESSOR AND MICROCONTROLLER

DMA CONTROLLER

ARCHITECTURE OF 8085

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The method of synchronising the processor with the I/O device in which the device sends a signal when it is ready is?
A
Exceptions
B
Signal handling
C
Interrupts
D
DMA
Explanation: 

Detailed explanation-1: -Interrupts are used to synchronize the processor with the I/O device. When an I/O operation is initiated, the processor sends a command to the I/O device and then continues with other tasks. When the I/O device completes the operation, it sends an interrupt signal to the processor.

Detailed explanation-2: -Answers. Explanation: When the processor activates the acknowledge line the devices send their interrupts to the processor.

Detailed explanation-3: -An interrupt request (IRQ) is a signal sent to a computer’s processor to momentarily stop (interrupt) its operations. The signal is usually sent by a hardware device to interrupt the processor so the device gets some time to run its own operation.

There is 1 question to complete.