a$)$ Explain the system input and output.

$[2$ Marks$]$

$CO1,PO1,C5$

b$)$ Construct the block diagram of the system.

$[5$ Marks$]$

$[$CO$1,$ PO$1,$ C$5]$

c$)$ State a weakness in the system and suggest an innovation to overcome the weakness.

$[3$ Marks$]$

$[$CO$1,$ PO$1,$ C$5]$

Figure $1$