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4 bit binary to gray counter converter HDL Verilog Code

This page of verilog sourcecode covers 4 Bit Binary to Gray Counter Converter using verilog.

Symbol

Following is the symbol and truth table of 4 bit binary to gray counter converter.

4 bit binary to gray counter converter

Truth Table

Rst Clk En B3 B2 B1 B0 G3 G2 G1 G0
1 X 0 0 0 0 0 0 0 0 0
0 1 1 0 0 0 1 0 0 0 1
0 1 1 0 0 1 0 0 0 1 1
0 1 1 0 0 1 1 0 0 1 0
0 1 1 0 1 0 0 0 1 1 0
0 1 1 0 1 0 1 0 1 1 1
0 1 1 0 1 1 0 0 1 0 1
0 1 1 0 1 1 1 0 1 0 0
0 1 1 1 0 0 0 1 1 0 0
0 1 1 1 0 0 1 1 1 0 1
0 1 1 1 0 1 0 1 1 1 1
0 1 1 1 0 1 1 1 1 1 0
0 1 1 1 1 0 0 1 0 1 0
0 1 1 1 1 0 1 1 0 1 1
0 1 1 1 1 1 0 1 0 0 1
0 1 1 1 1 1 1 1 0 0 0

Verilog code


module b2g(b,g);
input [3:0] b;
output [3:0] g;
xor (g[0],b[0],b[1]),
(g[1],b[1],b[2]),
(g[2],b[2],b[3]);
assign g[3]=b[3];
end module

Simulation result

4 bit binary to gray counter converter simulation result

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