Based from Drill1_1 as per stated on the screenshot, notice that wire1, wire2, and wire3 are outputs of gates EOR2, NOT and AND2 Why are they declared as wire instead of output?

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
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Chapter1: Computer Networks And The Internet
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This is a Verilog HDL, a subject in Computer Engineering.

  1. Based from Drill1_1 as per stated on the screenshot, notice that wire1wire2, and wire3 are outputs of gates EOR2NOT and AND2 Why are they declared as wire instead of output?
Ав с
wire1
EOR2
wire3
AND2
X
NOR2
wire2
NOT
Fig 1.1
INerilog model of circuit of Fig 1.1
module circuit1_1(A, B, C, X);
А, В, С;
X;
wire1, wire2, wire3;
input
output
wire
NOT(wire2, A);
EOR2(wire1, B, C);
AND2(wire3, wire1, A);
NOR2(X, wire3, wire2);
not
xor
ww
and
nor
Transcribed Image Text:Ав с wire1 EOR2 wire3 AND2 X NOR2 wire2 NOT Fig 1.1 INerilog model of circuit of Fig 1.1 module circuit1_1(A, B, C, X); А, В, С; X; wire1, wire2, wire3; input output wire NOT(wire2, A); EOR2(wire1, B, C); AND2(wire3, wire1, A); NOR2(X, wire3, wire2); not xor ww and nor
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