The Dr. has since built AND, NAND, OR, NOR, XOR and XNOR gates, as well as a buffer, incorporating light into every logic gate. Traditional inverters – NOT gates – are already made with diodes ...

XNOR logic gates, also known as exclusive-NOR gates, are digital logic gates that output true or high (1) only when the number of true inputs is even. Essentially, they are the complement of XOR gates ...

A technical paper titled “CMOS-based Single-Cycle In-Memory XOR/XNOR” was published by researchers at University of Tennessee, University of Virginia, and Oak Ridge National Laboratory (ORNL). “Big ...