/// SegmentLCD represents a 7-segment display that takes as input a 4-bit
/// number and outputs the correct pin configuration. The pins need to be
/// wired as {G, F, E, D, C, B, A} for this to work.
///
/// For example,
/// 
///	wire [7:0]	sum = 8'b00000000;
///	segment7 low (
///		.number(sum[3:0]),
///		.out({PIN_15, PIN_14, PIN_13, PIN_12, PIN_11, PIN_10, PIN_9})
///	);
module SegmentLCD (
	input	[3:0]		number,
	output	reg [6:0]	out
);

	always @(*)
	begin
		case (number)
			4'b0000: out = ~7'b0111111; // 0
			4'b0001: out = ~7'b0000110; // 1
			4'b0010: out = ~7'b1011011; // 2
			4'b0011: out = ~7'b1001111; // 3
			4'b0100: out = ~7'b1100110; // 4
			4'b0101: out = ~7'b1101101; // 5
			4'b0110: out = ~7'b1111101; // 6
			4'b0111: out = ~7'b0000111; // 7
			4'b1000: out = ~7'b1111111; // 8
			4'b1001: out = ~7'b1100111; // 9
			4'b1010: out = ~7'b1110111; // A
			4'b1011: out = ~7'b1111100; // B
			4'b1100: out = ~7'b0111001; // C
			4'b1101: out = ~7'b1011110; // D
			4'b1110: out = ~7'b1111001; // E
			4'b1111: out = ~7'b1110001; // F	
		endcase
	end

endmodule