Design of microcontrollers :::: We want to realize a prototype implementing a program that allows to manipulate the traffic lights ina crossing of two roads. We have three LEDs $($Red$,$ Yellow, Green$)$ in each direction $($A and B$)$which are connected in common cathode. The anode of each LED is connected to a bit of port P$0$ asfollows:$-$ RA is connected bit$0.-$ YA is connected bit$1.-$ GA is connected bit$2.-$ RB is connected bit$4.-$ YB is connected bit$5.-$ GB is connected bit$6\mathrm{.}1)$ Give the values to be sent to port P$0$ in order to allow the following sequence:$-$ GA is ON$,$ RA and YA are OFF. RB is ON$,$ GB and YB are OFF;$-$ YA is ON$,$ RA and GA are OFF. RB is ON$,$ GB and YB are OFF;$-$ RA is ON$,$ GA and YA are OFF. GB is ON$,$ RB and YB are OFF;$-$ RA is ON$,$ GA and YA are OFF. YB is ON$,$ RB and GB are OFF;$2)$ Write an assembly program in order to allow the previous sequence.Delay for RedA will be the sum of the Delay for GreenB $(=6$ ms$)+$ the Delay for YellowB$(=2$ ms$).$ Choose an appropriate values to write a Delay routine$\mathrm{.}3)$ The delay $6$ ms and Delay $2$ ms will be programmed using the mode $2$ of the timers T$0$ andT$1$ of the $8051.$ The XTAL$=11\mathrm{.}0592$MHz and the cycle of the timers $1\mathrm{.}085$ us$.$Determine the hexadecimal values to be loaded in the timers$\mathrm{.}4)$ Modify the previous program in order to use the timers for the delay purpose$\mathrm{.}5)$ The system is modified now by adding $7-$segments display $($D$7$A and D$7$B$)$ in each direction.The system will use the display of a number on the $7-$segment display. D$7$B will be connectedto port P$1$ and D$7$A will be connected to port P$2.$ Each digit display will be for a period calledDelay $(10).$The delay will replaced by the display on the $7-$segments of :$-$ Delay for Green $(=6)$ will be display of the values $6$ to $0.-$ Delay for Yellow $(=2)$ will be display of the values $2$ to $0.$a$)$ Give the sequence of values to be sent to the D$7$A in order to show the values $6$ to $0.$b$)$ Give the sequence of values to be sent to the D$7$B in order to show the values $2$ to $0.$c$)$ Modify the first program in order to handel lights through port P$0$ and the delay displayusing D$7$A and D$7$B$.$