Input? clk

Enter [1:0] s;

Output [7: 0] LED;

Reggie? [7:0]? led = 0；

Reggie? [ 1:0]? olds = 0；

Always @ (pose? clk)？ olds & lt= s；

Always @ (pose? Clock)

What if? (olds^s)

Case? (s)

2 ' b00:led & lt； = 1; ? //*a

2 ' b 0 1:led & lt； = 1;

2 ' b 10:led & lt； = 8 ' b 10 10 _ 10 10；

2 ' b 1 1:led & lt； = 8 ' b 0000 _ 0 1 1 1；

Close the case

other

Case? (s)

2'b00:？ led & lt={led[6:0]，led[7]}； //*b

2'b0 1:？ led & lt={led[0]，？ led[7: 1]}；

2'b 10:？ led & lt= ~ led？

2'b 1 1:？ led & lt={led[6:0]，led[7]}；

Close the case

Terminal module

//The first type: a light is on, moving one by one from right to left, and so on.

//The second type: a light is on, moving from left to right, and so on.

//The third type: each room is lit with a light, which circulates alternately.

//Fourth: Three Lamps District is on, moving one by one from right to left, and so on.

//Of course, there can be more patterns:

//For example, the light lights up gradually from right to left.

//*a is changed to:? led & lt= 1;

//*b Replace with:? led & lt=? (& ampled) 1:？ {led[6:0]， 1 ' b 1 }；