Das erste richtige Bild mit circuittikz

Nand2tetris_prj/001_Not.vhdl

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+library ieee;
+use ieee.std_logic_1164.all;
+
+entity notGate is
+  port (a, b : in std_logic;
+		out    : out std_logic);
+end notGate;
+
+architecture hardware of notGate is
+begin
+  out <= a nand  a;
+end hardware;