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)
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)
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
ChapterS: Safety, Basic Electricity And Ohm's Law
Section: Chapter Questions
Problem 8RQ: What is an MSDS?
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Transcribed Image Text:The circuit presented involves a 4-input priority encoder connected to a 2-to-4 decoder with enable functionality. It includes an associated truth table for the priority encoder, where the input \( I_3 \) is given highest priority. All signals in the circuit are active high.
**Diagram Explanation:**
(a) **Circuit Block Diagram:**
- **Priority Encoder:**
- Inputs: \( A (I_3), B (I_2), C (I_1), D (I_0) \)
- Outputs: \( Y_1, Y_0 \)
- Generates a binary code based on the highest priority active input.
- Also outputs a general output \( G \).
- **2-to-4 Decoder:**
- Inputs: \( S_1 (Y_1), S_0 (Y_0), E (G) \)
- Outputs: \( Z_3, Z_2, Z_1, Z_0 \)
- Decodes the input binary code into one of four possible active outputs.
(b) **Truth Table:**
| \( I_3 \) | \( I_2 \) | \( I_1 \) | \( I_0 \) | \( G \) | \( Y_1 \) | \( Y_0 \) |
|-----------|-----------|-----------|-----------|---------|-----------|-----------|
| 0 | 0 | 0 | 0 | 0 | X | X |
| 0 | 0 | 0 | 1 | 1 | 0 | 0 |
| 0 | 0 | 1 | X | 1 | 0 | 1 |
| 0 | 1 | X | X | 1 | 1 | 0 |
| 1 | X | X | X | 1 | 1 | 1 |
**Functions:**
The outputs \( Z_3, Z_2, Z_1, \) and \( Z_0 \) depend on the functions derived from the inputs \( A, B, C, \) and \( D \) through the operation of the priority encoder and the decoder. The specific logical functions need to be determined based on
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