Question

To overcome the lag in the operating speeds of the I/O device and the processor we use ___________

(a) BUffer spaces

(b) Status flags

(c) Interrupt signals

(d) Exceptions

The question was posed to me in final exam.

Question is from Accessing I/O Devices topic in division Input/Output Organisation of Computer Architecture

Answer 1

Right option is (b) Status flags

To elaborate: The processor operating is much faster than that of the I/O devices, so by using the status flags the processor need not wait till the I/O operation is done. It can continue with its work until the status flag is set.