a$.$ Consider a computer system that uses $1MB$ of memory made up of $256KB$ RAM chips. Assume an $8-$bit word size.

i$.$ How many RAM chips are required to satisfy this system's memory requirements?

$[3$ mark$]$

ii$.$ Determine the size of an address in this system.

$[4$ marks$]$

iii. Determine the number of chip address lines and the number of word select lines.

$[2$ marks$]$

iv$.$ What is the size of the decoder used to select the appropriate RAM chip?

$[1$mark$]$