module segmant_display7_display(
    binary_coded_decimal,
    segmant_display
   );
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    //IO and Variable declarations.
    input [3:0] binary_coded_decimal;
    output [6:0] segmant_display;
    reg [6:0] segmant_display;
   always @(binary_coded_decimal)
   begin
       case
(binary_coded_decimal) //case statement
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0 : segmant_display = 7'b0000001;
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1 : segmant_display = 7'b1001111;
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2 : segmant_display = 7'b0010010;
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3 : segmant_display = 7'b0000110;
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4 : segmant_display = 7'b1001100;
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5 : segmant_display = 7'b0100100;
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6 : segmant_display = 7'b0100000;
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7 : segmant_display = 7'b0001111;
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8 : segmant_display = 7'b0000000;
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9 : segmant_display = 7'b0000100;
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default : segmant_display = 7'b1111111;
       endcase
   end
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endmodule