CMOS Carry-Lookahead Adder Design
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- Microwind
- DrawIO
In my VLSI class, I was tasked with creating a CMOS design for an 8-bit adder circuit. I chose to design the most complex option available to us, the carry-lookahead adder. Below is a snapshot of the logic circuit and design for the 0-bit, followed by the full 8-bit logic and design.

0-bit Adder Logic Circuit

0-bit Adder CMOS Design

8-bit Carry-Lookahead Adder Logic Circuit

8-bit Carry-Lookahead Adder CMOS Design

Logic Circuit Part 1

Logic Circuit Part 2

Logic Circuit Part 3

Logic Circuit Part 4

CMOS Design Part 1

CMOS Design Part 2

CMOS Design Part 3

CMOS Design Part 4

CMOS Design Part 5

CMOS Design Part 6