51 single chip microcomputer general V2 dot matrix racing game obstacle simulation

The racing car is the bottom four lighted grids, you can use the left and right buttons to move left and right.
Every time an obstacle is successfully avoided, 10 points will be added to the score, and the speed will be increased by one level for every tenth obstacle.
The game ends after the car hits an obstacle.
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game over:
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Origin blog.csdn.net/x1131230123/article/details/108555417