Question $1[13]$

$1\mathrm{.}1$ Explain why the keys on a computer keyboard are arranged in the order of

QWERTY. $(4)$

$1\mathrm{.}2$ There are, potentially, many mistakes that designers can make when designing

interfaces. Specify what are the most problematic mistakes designers make. $(3)$

$1\mathrm{.}3$ Name and explain three common design mistakes users make when designing

interfaces?