Description: The program realized the effect of running horse lamp, and the four-state cycle showed that the program only used 4 leds, which could change the output digit of the program and increase the display number.
The INT_DIV module is used to divide the frequency of the main frequency. In this experiment, the frequency of the main frequency is 50MHz, and the frequency of 5Hz is generated by excessive frequency, so as to display on the experimental board. (if the frequency is directly used in the board, the LED will display always bright.)
LED modules are used to generate four different states for display.
It is low level and effective in the circuit.
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