EDN

Positive, Negative, and Assertion-Level Logic

Although wrapping one’s brain around the concepts of positive, negative, and assertion-level logic can require some mental gymnastics, understanding these topics can be very rewarding. Although ...
Hackaday

From Gates To FPGA’s – Part 1: Basic Logic

It’s time to do a series on logic including things such as programmable logic, state machines, and the lesser known demons such as switching hazards. It is best to start at the beginning — but even ...
EDN

Logic 101 – Part 1 – Assertion-Level Logic

The purpose of a circuit diagram is to convey the maximum amount of information in the most efficient fashion. One aspect of this is assigning meaningful names to wires; for example, naming a wire ...
BBC

Boolean operators and truth tables

Computers use electrical circuits which have two states – on or off. This can also be represented as 1 or 0 or True and False. Logic gates take an input of True or False and give an output of True or ...
Ars Technica

DNA logic gates calculate square root using 130 different molecules

Biological systems have caught the attention of computer scientists, who have been turning everything from RNA molecules to entire bacterial colonies into logic gates. So far, however, these systems ...

From light to logic: First complete logic gate achieved in soft material using light alone

Researchers from McMaster University and the University of Pittsburgh have created the first functionally complete logic gate—a NAND gate (short for "NOT AND")—in a soft material using only beams of ...