The purpose of this project is to design a basketball scoreboard system. The designed system has the following specification $$ There are two teams: Home $($H$),$ and Away $($A$).$

$$ Reset switch can be used to start the game. The current score for each team will be shown on two display segments starting with $00.$

$$ Each team will be given $5$ seconds in order to try scoring points. A countdown will appear on display segment $4$ starting from $5$ reaching to $0.$

$$ The two teams can$$t play simultaneously. H plays first then A gets the turn then H again. When it is team H turn, LEDR$1$ will be on and LEDR$2$ will be off. On the other hand, when it is team A turn, LEDR$2$ will be on and LEDRR$1$ will be off.

$$ In each attempt, the team may score $0,1,2,$ or $3$ points. The attempt score will be inserted by turning on one of the score switches for that team. For example, team H inserted score can be $0,1,2,$ or $3$ by turning on sw$1,$ sw$2,$ sw$3,$ or sw$4,$ respectively. In the same way, team A points can be inserted during it attempt through switches sw$5,$ sw$6,$ sw$8,$ or sw$9.$

$$ Each attempt$$s scored points will be added to the team$$s total score. Team H score will be shown using displays $0$ and $1$ while team A score will be shown using displays $2$ and $3.$

$$ If the countdown ends before inserting a score, the turn will simply move to the other team.

$$ Please note that turning on a score switch for a team outside its attempt time won$$t be counted and its score will not be changed.

$$ In this project you can consider that the maximum score any team can reach is $15.$

$$ During the game, LEDG$1$ will be $1$ if team H is winning while LEDG$2$ will be on if team A is winning. If the result is a tie, both LEDS go off.

$$ We assume that the user may switch on one score switch only during each attempt.

$$ You may need to use the clock from experiment $8$ in order to calculate the required delays.

$$ Example: The user turns on the reset switch and both teams start with $00$ score with both LEDG$1$ and LEDG$2$ are off. The first attempt is given to team H and the countdown display will count from $5$ to $0$ while LEDR$1$ is on$.$ During the countdown sw$3$ will be turned on and two points will be added to the team H score to be $02.$ Moreover, LEDG$1$ will be on as team H is winning. Next, the turn goes to team A and hence the countdown display starts counting again from $5$ to $0$ with LEDR$1$ goes off and LEDR$2$ goes on$.$ A$3$ sw$9$ is turned on before the countdown ends. As a result, three points will be added to team A score to become $03.$ LEGR$2$ will be on and LEDG$1$ will be off as team A is winning. The attempt is now returns to team H$.$ However, the countdown reaches $0$ while no score switch is turned on$.$ As a result, the score will not change and the attempt goes back to team A$.$

$1$

Figure $1.$ Prayers track system