module demo ( input clk, input [3:0] sw, output [15:0] leds, output [7:0] seg7dig, output [3:0] seg7sel ); localparam PRESCALE = 20; reg [PRESCALE+3:0] counter = 0; always @(posedge clk) counter <= counter + 1; assign leds = 1 << counter[PRESCALE +: 4]; endmodule pe='application/atom+xml'/>
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