//7 binary_7_bits_BCD
module binary_7_bits_BCD ( // display decimal value of 7-digit binary input
	input [6:0] SW,
	output [6:0] LEDR,
	output [0:6] HEX0, HEX1, HEX2);

	assign LEDR[6:0] = SW[6:0];
	wire [0:6] sw1 = SW[6:0];  // max 128
	reg hundreds = 0;
	reg tens = 0;
	reg n1 = 0;

	showDigitDec ex1(n1, HEX0);
	showDigitDec ex2(tens, HEX1);
	showDigitDec ex3(hundreds, HEX2);

	always @*
		begin

			if(sw1 >= 100) hundreds = 1;
			else hundreds = 0;

			if (sw1 >= 90 + hundreds * 100) tens = 9;
			else (sw1 >= 80 + hundreds * 100) tens = 8;
			else (sw1 >= 70 + hundreds * 100) tens = 7;
			else (sw1 >= 60 + hundreds * 100) tens = 6;
			else (sw1 >= 50 + hundreds * 100) tens = 5;
			else (sw1 >= 40 + hundreds * 100) tens = 4;
			else (sw1 >= 30 + hundreds * 100) tens = 3;
			else (sw1 >= 20 + hundreds * 100) tens = 2;
			else (sw1 >= 10 + hundreds * 100) tens = 1;
			else tens = 0;

			n1 = sw1 - tens * 10 - hundreds * 100;

		end

endmodule