Answer ALL questions

Marks

Question $1$

a$)$ Computer hardware performs a number of tasks and can be used by people to help them use computers.

i$)$ Describe THREE $(3)$ tasks that computer hardware can be used to

$3$

undertake.

ii$)$ Identify TWO $(2)$ items of hardware that can assist a visually impaired

$2$

person to use a computer.

b$)$ Driver software is a type of system software.

i$)$ Explain the purpose of driver software.

$2$

ii$)$ Identify THREE $(3)$ examples of hardware in a computer system that require

$3$

driver software.

Total $10$ Marks

Question $2$

a$)$ A central processing unit $($CPU$)$ has a number of components and its performance is affected by a number of factors.

i$)$ Explain the role of a CPU's memory unit.

$2$

ii$)$ Identify THREE $(3)$ factors that can affect a CPU's performance.

$3$

b$)$ Software commands are executed by the fetch$-$decode$-$execute cycle.

$3$

Describe THREE $(3)$ actions that occur in the fetch$-$execute$-$decode cycle.

c$)$ EEPROM is a type of Read Only Memory $($ROM$)$ component in a computer

$2$

system.

Identify TWO $(2)$ other characteristics of EEPROM.

Total $10$ Marks