Question B$2$

Input$/$Output $(\frac{\text{I}}{O})$ is the process of sending and receiving data to and from a computer. A computer system consists of I$/$O devices or peripherals, control units, and software to carry out the I$/$O instruction$($s$)$ through a sequence of operations.

$($a$)$ What are the THREE categories of $\frac{\text{I}}{O}$ devices?

$(3$ marks$)$

$($b$)$ List any SEVEN common I$/$O devices that are linking to a personal computer

$(7$ marks$)$

$($c$)$ Suggest any FIVE actions if you have found an I$/$O error on the operating system of a computer.

$(5$ marks$)$

$($d$)$ An I$/$O technique for I$/$O operation is DMA. Explain what it is and briefly compare it with programmed I$/$O and interrupt$-$driven I$/$O$.$

$(5$ marks$)$