Design of 3-Inch Digital Tube Scoreboard

STC89C52 microcontroller as the control chip,digital tube with large silver were used in the design,with functions of countdown and two team scoring simutaneously,whose score maximum is 999 and time maximum is 99 minutes,and time suspending,finishing whistle,button or distant control functions were also carried.Referees can manage games conveniently.The scoreboard can be used for basketball,soccer,volleyball and other ball games.