In an interrupt driven input/output ?

Question

TuteeHUB · Accepted Answer

the CPU runs a user written code and does accordingly

TuteeHUB · Answer

the CPU uses polling to watch the control bit constantly, looping to see if device is ready

TuteeHUB · Answer

the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available

TuteeHUB · Answer

the CPU receives an interrupt when the device is ready for the next byte

1.	In an interrupt driven input/output ?
A.	the CPU uses polling to watch the control bit constantly, looping to see if device is ready
B.	the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available
C.	the CPU receives an interrupt when the device is ready for the next byte
D.	the CPU runs a user written code and does accordingly
Answer» D. the CPU runs a user written code and does accordingly

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