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This is a sequential circuit. Read the simulation waveforms to determine what the circuit does, then implement it.
2030405060708090100110120130140150160170180190200210clkaq4560123456014560
- module top_module (
- input clk,
- input a,
- output [3:0] q );
- always@(posedge clk)begin
- if(a)
- q <= 'd4;
- else if(q == 6)
- q <= 4'b0;
- else
- q <= q + 1;
- end
- endmodule
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