◆ AND GATE(2 input)
1. 소스
library ieee;
use ieee.std_logic_1164.all;
entity andgate is
port(
sw1 : in std_logic;
sw2 : in std_logic;
led : out std_logic);
end andgate;
architecture sample of andgate is
begin
led [= sw1 and sw2;
end sample;
2. 시뮬레이션
1) Flow Summary
2) Waveform
3) time analyzer Summary
3. 블록다이어그램
※ 2입력 and 게이트의 정상적인 동작파형을 확인하였다.
◆ nor gate(2 input)
1. 소스
library ieee;
use ieee.std_logic_1164.all;
entity norgate is
port(a,b : in std_logic;
y : out std_logic);
end norgate;
architecture sample of norgate is
begin
y [= a nor b;
end sample;
2. 시뮬레이션
1) Flow Summary
2) Waveform
3) time analyzer Summary
3. 블록다이어그램
◆ nand_4
1.소스
library ieee;
use ieee.std_logic_1164.all;
entity nand_4 is
port( a,b,c,d : in std_logic;
y : out std_logic);
end nand_4;
architecture sample of nand_4 is
begin
y [= not(a and b and c and d);
end sample;
.... |
2014.01.20
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