Crossbar latch

The Crossbar latch is a technology published by Phillip Kuekes of HP Labs in 2001 and granted a US patent in 2003,[1] with the goal of eventually replacing transistors in various applications.

[2] This would enable the creation of integrated circuits composed solely of memristors, which, according to the patent, might be easier and less expensive to create.

"[3] The crossbar latch was introduced by HP Labs scientists in the Journal of Applied Physics, which provides a basis for constructing logic gates using memristors.

"Greg Snider of Hewlett-Packard created this application, which uses crossbar latches to imitate the functionality of a half adder, which is the foundation of modern computing systems.

By setting different logic inputs A, NOT A, B, and NOT B to different row wires this configuration produces the sum and carry outputs typical for a half-adder.