Reduction

Parity checking is often used as a simple method of detecting errors when transmitting data through an imperfect channel. Create a circuit that will compute a parity bit for a 8-bit byte (which will add a 9th bit to the byte). We will use "even" parity, where the parity bit is just the XOR of all 8 data bit

module top_module (
    input [7:0] in,
    output parity); 

    assign parity = (^in == 1) ? 1 : 0 ;
endmodule