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Decorder, Encoder, Multiplexer
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Decoder : 2-to-4 line decoder ±¸Çö
2-to-4 line decoder¸¦ ÀÌ¿ëÇÏ¿© 3-to-8 ±¸Çö
3-to-8 2°³ ÀÌ¿ëÇÏ¿© 4-to-16 ±¸Çö
(½Ã¹Ä·¹À̼ǿ¡¼± 4-to-16À», COMBO¿¡¼´Â 3-to-8À» ÇÒ ¿¹Á¤)
Encoder : 16-to-4 encoder ±¸Çö
Multiplexer : 2-to-1 MUX ±¸Çö
2-to-1 MUX 3°³ ÀÌ¿ëÇÏ¿© 4-to-1 MUX ±¸Çö
4-to-1 MUX 4°³ ÀÌ¿ëÇÏ¿© 16-to-4 MUX ±¸Çö
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2-to-4 line decoder ±¸Çö
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module ttfd(A[0],A[1],D[0],D[1],D[2],D[3]);
output [3:0]D;
input [1:0]A;
wire [1:0]NA;
not (NA[0],A[0]);
not (NA[1],A[1]);
and (D[0],NA[0],NA[1]);
and (D[1],A[0],NA[1]);
and (D[2],NA[0],A[1]);
and (D[3],A[0],A[1]);
endmodule
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00, 01, 10, 11 ÀÏ ¶§ °¢ °¢ D[0],D[1],D[2],D[3]ÀÌ 1ÀÌ µÈ´Ù.
2-to-4 line decoder¸¦ ÀÌ¿ëÇÏ¿© 3-to-8 ±¸Çö
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modu¡¦(»ý·«)
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