Lecture 4

Lecture 4 - ECE52 Spring 11 Lecture 4 1/21/11 Homework 2, 3...

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1 ECE52 Spring 11 Lecture 4 1/21/11 Homework 2, 3 posted due Monday, Friday respectively
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2 Encoder Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 Output 1 8:3 Encoder Output 2 Output 0 Constraint: exactly one input on (can relax with more complex designs) 2 n inputs n outputs
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3 Encoder Input 0 0 Input 1 1 Input 2 0 Input 3 0 Input 4 0 Input 5 0 Input 6 0 Input 7 0 Output 1 0 8:3 Encoder Output 2 0 Output 0 1 Constraint: exactly one input on (can relax with more complex designs) 2 n inputs n outputs
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4 Encoder Input 0 0 Input 1 0 Input 2 0 Input 3 0 Input 4 0 Input 5 0 Input 61 Input 7 0 Output 1 1 8:3 Encoder Output 2 1 Output 0 0 Constraint: exactly one input on (can relax with more complex designs) 2 n inputs n outputs
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5 Simple 4:2 Encoder Truth Table w 3 w 2 w 1 w 0 f 1 f 0 0 0 0 0 UNDEFINED 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 1 UNDEFINED 0 1 0 0 1 0 0 1 0 1 UNDEFINED 0 1 1 0 UNDEFINED 0 1 1 1 UNDEFINED 1 0 0 0 1 1 1 0 0 1 UNDEFINED 1 0 1 0 UNDEFINED 1 0 1 1 UNDEFINED 1 1 0 0 UNDEFINED 1 1 0 1 UNDEFINED 1 1 1 0 UNDEFINED 1 1 1 1 UNDEFINED Input 0 Input 1 Input 2 Input 3 Output 1 4:2 Encoder Output 0
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6 Simple 4:2 Encoder Truth Table w 3 w 2 w 1 w 0 y 1 y 0 0 0 0 0 UNDEFINED 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 1 UNDEFINED 0 1 0 0 1 0 0 1 0 1 UNDEFINED 0 1 1 0 UNDEFINED 0 1 1 1 UNDEFINED 1 0 0 0 1 1 1 0 0 1 UNDEFINED 1 0 1 0 UNDEFINED 1 0 1 1 UNDEFINED 1 1 0 0 UNDEFINED 1 1 0 1 UNDEFINED 1 1 1 0 UNDEFINED
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This note was uploaded on 07/05/2011 for the course ECE 52 taught by Professor Dr.jonathanboard during the Spring '11 term at Duke.

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Lecture 4 - ECE52 Spring 11 Lecture 4 1/21/11 Homework 2, 3...

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