This is picture of book , Notice But Not Required My question is Read chapter 6

Question

This is picture of book , Notice But Not Required

My question is

Read chapter 6 of Digital Circuits Projects, and REALLY understand the truth tables and expressions that correctly describe the sum and carryOut functions for the half adder and full adder.

Simulate the 2 bit adder in your simulator (Remember that this should produce more than just a set of electronic files.

Stretch: simulate the 3 bit adder.

Do you have an unused output in either of these circuits? Where does it go? What does it mean (If anything)?

Explanation / Answer

Both for 2 bit & 3 bit adder there is two output, sum and Carry out. I think in ur case carry would be unused output. because when I simulate then there is no missing output in any circuit. like when all three bits are 1 1 1 the sum will be 1 and carry out will be 1. there is no chance that any output is unused.

Hope you will understand

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