Project Description:

In this project, you will design a two$-$stage digital system to monitor and regulate the temperature in two

zones of a greenhouse $($Zone A and Zone B$).$ The system will use comparators in Stage $1$ to compare

temperature readings from the two zones, and state analysis in Stage $2$ to implement a control

mechanism for cooling or heating based on the results.

Stage $1$: You will design a circuit that takes two $4-$bit binary inputs, representing the temperature

readings from Zone A and Zone B $($ranging from $0$ to $15).$ A comparator will be used to

determine:

If Zone A is hotter than Zone B$($A $>$ B$).$

If Zone B is hotter than Zone A$($A $$ B$).$

If both zones have the same temperature $($A$=$B$).$ The outputs of this stage will be two

binary signals, XX and YY $,$ which represent the comparison results and will serve as

inputs to Stage k$.$

Stage $2$: You will design a state machine with four states:

State $0$: Cooling Zone A$.$

State $1$: Cooling Zone B$.$

State $2$: Idle $($temperatures are equal$).$

State $3$: Heating both zones $($if external conditions require it$).$ The state machine will

transition between states based on the comparator outputs $($ XX and YY $)$ and specific

conditions. Outputs from this stage will control the cooling or heating mechanisms for

the greenhouse.