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74. Gated SR Latch

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Solving Approach

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Code

module sr_latch_enable (
    input  EN,
    input  S,
    input  R,
    output Q,
    output Qn
);
	// Write your code here
	 reg Q_reg;
    reg Qn_reg;

    always @(*) begin
        if (EN) begin 
            if (S == 1 && R == 0) begin
                Q_reg=1;
                Qn_reg=0;
            end
            else if (S == 0 && R == 1) begin
                Q_reg=0;
                Qn_reg=1;
            end
            else if (S == 1 && R == 1) begin
                Q_reg=0;
                Qn_reg=1;
            end
        end
    end
    assign Q = Q_reg;
    assign Qn = Qn_reg;
endmodule

 

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