2:4 DECODER

(5TH SEM ECE HDL)

A decoder is a circuit that changes a code into a set of signals. It is called a decoder because it does the reverse of encoding, but we will begin our study of encoders and decoders with decoders because they are simpler to design.

A common type of decoder is the line decoder which takes an n-digit binary number and decodes it into 2ndata lines. The simplest is the 1-to-2 line decoder. 

VERILOG CODE  (ECE HDL )

module (input a,b,
output p,q,r,s);
assign p=(~a)&(~b);
assign q=(~a)&(b);
assign r=(a)&(~b);
assign s=(a)&(b);
endmodule


TRUTH TABLE

video link for explantion===https://youtu.be/6hXhdhNNtc8

Another code for 2:4 Decoder

Simulation Graph