Homework 3

Please do the following:

1. The Call Convention
   1. (2 points) Outline section B.6 and section 2.8
   2. (4 points) 2.19.1 and 2.19.2 part a only
2. (3 points each) For each of the following supply the missing parts:
   • Truth Table
   • Boolean Expression
   • Circuit
   1. a = xy+ xy

   2. x	y	output
      0	0	1
      0	1	0
      1	0	0
      1	1	1

   3. 
3. (6 points) Encoder: An encoder takes 2ⁿ input lines, where only one line is asserted (say line k), the output is n lines, which encode the address of the asserted line.
   1. Give a truth table for an 8 bit input decoder encoder.
   2. Give the boolean expressions for the output of this decode encoder.
   3. Give a circuit which implements a 8->3 encoder.