De-Morgan`s Theorem

Posted By on September 30, 2014


Download PDF
Karnaugh map or K Map
Photocopier Machine

The two theorems suggested by De-Morgan which are extremely useful in Boolean Algebra are as following.

Theorem 1

De Morgan Theorem 1

  • The left hand side (LHS) of this theorem represents a NAND gate with input A and B where the right hand side (RHS) of the theorem represents an OR gate with inverted inputs.
  • This OR gate is called as Bubbled OR.

De Morgan Theorem 1 Diagram

Table showing verification of the De-Morgans’s first theorem

De Morgan Theorem 1 Verification Table

Theorem 2

De Morgan Theorem 2

  • The LHS of this theorem represented a NOR gate with input A and B whereas the RHS represented an AND gate with inverted inputs.
  • This AND gate is called as Bubbled AND.

De Morgan Theorem 2 Diagram

Table showing verification of the De-Morgans’s second theorem

De Morgan Theorem 2 Verification Table

Karnaugh map or K Map
Photocopier Machine

Download PDF

Posted by Akash Kurup

Founder and C.E.O, World4Engineers Educationist and Entrepreneur by passion. Orator and blogger by hobby

Website: http://world4engineers.com