//SW[3:0] data inputs

//HEX0[] output display

module decoder(HEX0, SW);
    input [3:0] SW;
    output [6:0] HEX0;

    hex0 h0(
        .c0(SW[0]),
        .c1(SW[1]),
        .c2(SW[2]),
        .c3(SW[3]),
		  .m(HEX0[0])
        );
	 hex1 h1(
        .c0(SW[0]),
        .c1(SW[1]),
        .c2(SW[2]),
        .c3(SW[3]),
		  .m(HEX0[1])
        );
	 hex2 h2(
        .c0(SW[0]),
        .c1(SW[1]),
        .c2(SW[2]),
        .c3(SW[3]),
		  .m(HEX0[2])
        );
	 hex3 h3(
        .c0(SW[0]),
        .c1(SW[1]),
        .c2(SW[2]),
        .c3(SW[3]),
		  .m(HEX0[3])
        );
	 hex4 h4(
        .c0(SW[0]),
        .c1(SW[1]),
        .c2(SW[2]),
        .c3(SW[3]),
		  .m(HEX0[4])
        );
	 hex5 h5(
        .c0(SW[0]),
        .c1(SW[1]),
        .c2(SW[2]),
        .c3(SW[3]),
		  .m(HEX0[5])
        );
	 hex6 h6(
        .c0(SW[0]),
        .c1(SW[1]),
        .c2(SW[2]),
        .c3(SW[3]),
		  .m(HEX0[6])
        );
endmodule

module hex0(c0, c1, c2, c3, m);
    input c0;
    input c1;
    input c2;
	 input c3;
    output m;

    assign m = (c3 & c2 & ~c1 & c0) | (c3 & ~c2 & c1 & c0) | (~c3 & ~c2 & ~c1 & c0) + | (~c3 & c2 & ~c1 & ~c0);
endmodule

module hex1(c0, c1, c2, c3, m);
    input c0;
    input c1;
    input c2;
	 input c3;
    output m;

    assign m = (c3 & c1 & c0) | (c2 & c1 & ~c0) | (c3 & c2 & ~c0) + | (~c3 & c2 & ~c1 & c0);
endmodule

module hex2(c0, c1, c2, c3, m);
    input c0;
    input c1;
    input c2;
	 input c3;
    output m;

    assign m = (c3 & c2 & ~c0) | (c3 & c2 & c1) | (~c3 & ~c2 & c1 & ~c0);
endmodule

module hex3(c0, c1, c2, c3, m);
    input c0;
    input c1;
    input c2;
	 input c3;
    output m;

    assign m = (c2 & c1 & c0) | (~c3 & c2 & ~c1 & ~c0) | (c3 & ~c2 & c1 & ~c0) + | (~c2 & ~c1 & c0);
endmodule

module hex4(c0, c1, c2, c3, m);
    input c0;
    input c1;
    input c2;
	 input c3;
    output m;

    assign m = (~c3 & c0) | (~c2 & ~c1 & c0) | (~c3 & c2 & ~c1);
endmodule

module hex5(c0, c1, c2, c3, m);
    input c0;
    input c1;
    input c2;
	 input c3;
    output m;

    assign m = (~c3 & ~c2 & c1) | (~c3 & ~c2 & c0) | (c3 & c2 & ~c1 & c0) + | (~c3 & c1 & c0);
endmodule

module hex6(c0, c1, c2, c3, m);
    input c0;
    input c1;
    input c2;
	 input c3;
    output m;


    assign m = (~c3 & ~c2 & ~c1) | (c3 & c2 & ~c1 & ~c0) | (~c3 & c2 & c1 & c0);

endmodule