The 74LS138 is a 3-line-to-8-line decoder with the enable function. Its logic symbol and truth decoder. are shown in Figure Q2. Write Verilog code for this Inputs Output Enable Select G2A G2B G1 CBA01234 56 7 1 X|X X XX111111|1T | X 1 X|X X X 1 1 1|1 11|1 X| X 0 X X X1 11 1 111 C 2 b 3 b 0 0 0 0 1111 0 01|10 1 1|1|1 0 1 0 1|1 0 1 1 1|1 1 0. 1 4 b 1 d G2A 5 b 1 0 1 1 111 0 1 1 1 1 0 0 1 1 1 1 0 1 1 01|1|1|1|1|1|0 1 10 1|1|1 1|1|1|0| 1 1 111 1 1 1 1 1 1 10 d G2B 1 G1 1 1 Figure Q2 Enable Select Inputs Outputs

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ISBN:9780133923605
Author:Robert L. Boylestad
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2 The 74LS138 is a 3-line-to-8-line decoder with the enable function. Its logic
symbol and truth table are shown in Figure Q2. Write Verilog code for this
decoder.
Inputs
Output
Enable
Select
G2A| G2B G1 C BA012345 6 7
X X X XX11111111
1 XXX X111|1|1
A
| X
|X
111
C
2 b
X 0 X XX
1|1|1|1| 1|1
3 b
1
0 0 0|01 1111| 1
4 b
0| 0|1|1|0 1 1|1
0 10|1|1011111
0 1
1 0 011 1 10 1 1 1
1 1 0 1 1 11 1 1 0 11
1
111
d G2A
5 b
1
d G2B
6 b
1
11110| 1|1|1
1
G1
7 b
1|1 1 0 1 1
1 1 11
1|1|1|1|0 1
1
1
11110
Figure Q2
Enable
Select Inputs
Outputs
Transcribed Image Text:2 The 74LS138 is a 3-line-to-8-line decoder with the enable function. Its logic symbol and truth table are shown in Figure Q2. Write Verilog code for this decoder. Inputs Output Enable Select G2A| G2B G1 C BA012345 6 7 X X X XX11111111 1 XXX X111|1|1 A | X |X 111 C 2 b X 0 X XX 1|1|1|1| 1|1 3 b 1 0 0 0|01 1111| 1 4 b 0| 0|1|1|0 1 1|1 0 10|1|1011111 0 1 1 0 011 1 10 1 1 1 1 1 0 1 1 11 1 1 0 11 1 111 d G2A 5 b 1 d G2B 6 b 1 11110| 1|1|1 1 G1 7 b 1|1 1 0 1 1 1 1 11 1|1|1|1|0 1 1 1 11110 Figure Q2 Enable Select Inputs Outputs
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