1. Universal Gates Sum of Products Products of Sum
Lecture 2
Universal Gates
Sum of Products
Products of Sum

2. Gate Level Design Basic Gates Universal Gates
AND, NAND,OR, NOR, XOR, XNOR,NOT
Universal Gates
NAND Gates
NOR Gates
Multiple Inputs Logic Gates

3. NAND Based Logic Gates

4. NOR Based Logic Gates

5. Multiple Inputs Logic Gates

6. Sum of Products
A “sum of products” implementation outputs a 1 when one of the intermediates products is true

7. Generate a Sum of Products
AND inputs which produce an output of 1
OR the outpus of AND gates

8. Sum of Product Example

9. Products of Sum
Produces a false outputs when one of its intermediate OR gates outputs false

10. Generate a Product of Sums
OR inverse of inputs which produce an output of 0
AND the outputs of OR gates

11. Product of Sum Example
6=(A+B+C)&(A+B+!C)&(A+!B+!C)&(!A+B+!C)&(!A+B+C)