Answered: 1. If the input D7 is high (or “1”) and…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The encoder is the inverse operation of a decoder. It generates the binary code corresponding to the input value. The following figure shows a block diagram of 8-to-3 encoder. There are eight inputs, i.e. D7 through D0, and three outputs (binary code), i.e. B2, B1 and B0. Answer the following questions. (Note: You should show all the steps)

1. If the input D7 is high (or “1”) and the other inputs are low (or “0”), what binary code does the encoder generate?

2. Draw the complete truth table of 8-to-3 encoder.

D₁
D6
D5
D₂
D3
D2
D₁
Do
8:3
Encoder
111
110
101
100
011
010
001
000
B₂
B1
Bo

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