The circuit below has a 4-input priority encoder connected to a 2-to-4 decoder with enable. The truth table for the priority encoder is given. (The I3 input is highest priority.) All signals are active high. What functions of A, B, C and D are realized by Z3, Z2, Z₁, and Zo? A B C- D. 13 1₂ Priority Encoder 4₁ Io G Z3 S₁ 2-to-4 Z₂ Decoder Z₁ So Zo E 13 12 11 10 GY₁ Y₁ 0000 000 0001 100 001 101 01 110 1 1 1 1 (b)

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The circuit below has a 4-input priority encoder connected to a 2-to-4 decoder with enable. The truth
table for the priority encoder is given. (The 13 input is highest priority.) All signals are active high.
What functions of A, B, C and D are realized by Z3, Z2, Z₁, and Zo?
A
B
C-₁₂
To
D
Y₁
Yo
13
¹₂ Priority
Encoder
G
(a)
Z₂
-S₁ 2-to-4 Z₂
Decoder Z₁
So
Zo
E
13 12 11 10 GY₁ Yo
0000
000
0001
100
001
0 1
(b)
10 1
110
1 1 1
Transcribed Image Text:The circuit below has a 4-input priority encoder connected to a 2-to-4 decoder with enable. The truth table for the priority encoder is given. (The 13 input is highest priority.) All signals are active high. What functions of A, B, C and D are realized by Z3, Z2, Z₁, and Zo? A B C-₁₂ To D Y₁ Yo 13 ¹₂ Priority Encoder G (a) Z₂ -S₁ 2-to-4 Z₂ Decoder Z₁ So Zo E 13 12 11 10 GY₁ Yo 0000 000 0001 100 001 0 1 (b) 10 1 110 1 1 1
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