### Logic Gates

Transcript: XOR gate TTL - transistor-transistor logic - this technology supplanted DTL technology with observation that one transistor can replace two diodes with higher speed and using only half the space CMOS - complementary metal–oxide–semiconductor - to reduce size and power consumption the bipolar transistors have been replaced by complementary field-effect transistors (MOSFETs) AND gate Charles Sanders Peirce Technical classification: NOT gate Thank You for listening. described in a 1886 letter, how logical operations could be carried out by electrical switching circuits History introduced the use of Boolean algebra in the analysis and design of switching circuits in 1937 Nikola Tesla Types of logic gates Logic gates Types of logic gates A logic gate is an idealized or physical device implementing a Boolean function, that is, it performs a logical operation on one or more logic inputs and produces a single logic output. Harvard Mark I - electro-mechanical digital computer built from relays Technical classification: OR gate RTL - resistor-transistor logic - the simplest family of logic gates using bipolar transistors and resistors Implementation of logic gates Walther Bothe Maya II - a computer created from logic gates which has been made out of DNA, it can play a complete game of tic-tac-toe with human opponent Starting in 1898, Nikola Tesla filed for patents of devices containing electro-mechanical logic gate circuits Bartosz Radomski The first modern AND gate was made in 1924 by DTL - diode-transistor logic - resistors from RTL was replaced by diodes for higher speed Parts of presentation Claude Elwood Shannon Logic gates are primarily implemented using diodes or transistors acting as electronic switches, but can also be constructed using electromagnetic relays, fluidic logic, pneumatic logic, optics, molecules, or even mechanical elements. What is a logic gate Logic classification: Types of logic gates What is a logic gate History of logic gates Types of logic gates Implementation of logic gates