说明：  no intro
(The article describes the realization of the program based on table tennis game consoles, to achieve the functions of: (1) was designed by A, B sides play, the referee of three table tennis game. (2) with 13 LEDs arranged in a straight line, the midpoint of the two table tennis game simulated table tennis table is composed of 13 LEDs lit light-emitting diode according to the direction of movement to represent the ball movement, in the table tennis video game design B racket button in order to hit the ball players. (3) When the "ball" (lit bird LEDs) movement to a party last one, participants should be able to decisively press in their side of the button switch, that means start the racket hit the ball. A press table tennis switch, the first near the Party a LED lights, and then the light-emitting diodes were lit by the Party direction, on behalf of table tennis movement. When the ball over the net in accordance with the the designer provisions ball B can be shot. If Party B in)