Universal Logic Gates (2015)

There are many articles about how NAND and NOR are universal gates, but many of these articles omit other gates that are also universal gates. This article covers two input logic gates, demonstrates that the NAND gate is a universal gate, and demonstrates how other gates are universal gates that can be used to construct any logic gate. This article has discussed logic gates, universal gates, demonstrated that the NAND gate is a universal gate, and proven that four additional universal logic gates exist.

Source: www.allaboutcircuits.com