用8个LED发光管（红黄绿）的来回滚动显示来模拟打乒乓球时乒乓球在两边球台上的来回运动。比赛双方用按钮/开关（双方各用一个按钮/开关）来模拟发球与接球，即发球方按动其控制的按钮/开关，球从发球方一侧向另一方运动（LED发光管从发球方到对方逐个点亮，滚动显示），当球运动至接球方时，接球方立即按动其控制的按钮/开关，“击球”使球“弹回”发球方一侧，如此周而复始，直至在规定的击球时间内有一方未能完成击球动作，从而对方的一分，然后继续比赛。比赛规则可参照一般的乒乓球比赛规则。

（1）　　球以每0.5秒滚过一个LED的速度移动；

（2）　　回球需在球到达后的0.5秒内进行（按下按钮），否则按失球计算；

（3）　　球未到达提前按下按钮按失球处理，不起回球作用；

（4）　　在PC机上显示比赛过程，同时用2个八段数码管显示比分（按10进制计数，初始值0:0，可自行设计显示及规则，可简化为0—9，也可为0—99）；

（5）　　精确计时。

-8 LED light tubes (red, yellow, and green), rolling back and forth to simulate the playing table tennis, ping-pong table in both sides of the ball moving back and forth. The two contestants with the button/switch (each of the two sides with a button/switch) to simulate the tee and the ball, press the control button/switch serving side, the ball from the side of the serving side to the other sports (LED light tube from the tee the other party to the lit one by one, scroll display), when the ball movement to the ball side, the ball immediately press the control button/switch, "batting the ball" bounced back "side of the serving side, again and again until within the provisions of batting time party fails to complete the swing, so the other one point, and then continue with the race. With reference to the general rules of the game table tennis competition rules.

(1) Ball every 0.5 seconds scrolled off one LED speed movement

(2) return the ball to be within 0.5 seconds after the ball re