# VHDL Logic Gate Programming Examples

This content provides VHDL code examples for various logic gates including AND, OR, NOT, XOR, and X-NOR gates along with their corresponding circuit diagrams. Each code snippet is accompanied by a brief explanation and a visual representation of the logic operation. The provided VHDL code can be utilized for designing digital circuits and implementing logic operations in hardware systems.

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**Logic Operation AND GATE**VHDL Code: Library ieee; use ieee.std_logic_1164.all; entity and1 is port(x,y:in bit ; z:out bit); end and1; architecture YYY of and1 is begin z<=x and y; end YYY;**Logic Operation OR Gate**VHDL Code: Library ieee; use ieee.std_logic_1164.all; entity or1 is port (x,y:in bit ; z:out bit); end or1; Architecture YYY of or1 is begin z<=x or y; end YYY;**Logic Operation NOT Gate**VHDL Code: Library ieee; use ieee.std_logic_1164.all; entity not1 is port(x:in bit ; y:out bit); end not1; architecture YYY of not1 is begin y<=not x; end YYY;**Logic Operation XOR Gate**VHDL Code: Library ieee; use ieee.std_logic_1164.all; entity xor1 is port (a,b:in bit ; c:out bit); end xor1; architecture YYY of xor1 is begin c<=a xor b; end YYY;**Logic Operation X-NOR Gate**VHDL Code: Library ieee; use ieee.std_logic_1164.all; entity xnor1 is port (a,b:in bit ; c:out bit); end xnor1; architecture YYY of xnor1 is begin c<=not(a xor b); end YYY;