Gates are digital (t wo state) circuits because the input and output signals are either low voltage (0 ) or high voltage (1 ). Gates are often called logic circuits because they can be analyzed with Boolean algebra. Gates are classified into two types: Basic Gates: NOT Gate: A NOT gate has only one input and one output.

Whilst there are a number of logic gates, only the six simplest are covered in this booklet: 1. NOT gate 2. AND gate 3. OR gate 4. NAND gate 5. NOR gate 6. XOR gate. The following notes describe the function of all six gates, how to produce truth tables, how to design networks using logic gates, and how to determine the output from a logic ...

Here we show five different representation of the OR gate or OR function. They are: In summary, OR operation produces as result of 1 whenever any input is 1. Otherwise 0. An OR gate is a logic circuit that performs an OR operation on the circuit's input. What is the only set of input conditions that will produce a LOW output for any OR gate?

We use the axioms and theorems of Boolean algebra to optimize our designs. Design goals vary. " Reduce the number of inputs? " Reduce the number of gates? " Reduce number of gate levels? How do we explore the tradeoffs? In fact, we can do it with only NOR or only NAND. CMOS logic gates are inverting.

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.

Logic gates are circuits that implement the logical AND, OR, NOT and other boolean functions, whose truth tables we studied last week. There are many ways to implement logic gates using transistors, but the most common is known as comple-

•The easiest gate to analyze is the invert er (NOT) gate. By looking at the inverter we can l tdlbtllthili l ttilearn a great deal about all gate physical implementations. •The Voltage Transfer Characteristic (VTC) of an ideal inverter is: v i Definitions: •V OH =Logic state “1” or “True”. The highest possible output voltage. •V OL

What are logic gates? • Logic gates turn ON when a certain condition is true, and OFF when the condition is false – They check whether or not the information they get follows a certain rule • They either spit out the answer true (ON) or false (OFF) • …

This document introduces the fundamental concepts of logic gates used in digital circuits, specifically focusing on OR, AND, NOT, XOR, NOR, NAND, and XNOR gates. Each gate's operation is explained through truth tables and Boolean algebra, illustrating how they function based on binary inputs of 0 and 1.

Logic gates are the basic building block of all digital electronic systems. They are the decision making units in electronic systems and there are different types for different situations. The simplest form of logic gates has only one input and one output.

All of the logical gate functions, as well as the Boolean relations discussed in the next section, follow from the truth tables for the AND and OR gates. We reproduce these below.

Logic gates can be broken down into three categories: basic gates, negative gates, and exclusive gates. Logic gates are used to perform various calculations and run through computations. They may seem simple but when used together they can …

Logic Gates • digital circuit that either allows a signal to pass through it or not. • Used to build logic functions • There are seven basic logic gates: AND, OR, NOT, NAND (not AND), NOR (not OR), XOR, and XNOR (not XOR) [later] Building Functions: Logic Gates A B Out 0 0 0 0 1 1 1 0 1 1 1 1 A B Out 0 0 0 0 1 0 1 0 0

An electronic circuit which performs logical operations such as OR (+), AND (.) and NOT (-) called logical operators , is called a logic gate or a logic circuit.

In this unit, we discuss the teaching of the basic concepts of Boolean algebra, different logic gates: AND, OR, NOT, NAND and NOR, and electronic circuits for logic gates. We also deal with integrated circuits in brief and give some real world applications of logic gates, which you can use in your teaching.

Logic gate diagrams Logic gates may be combined to form logic gate diagrams that perform more complicated logical operations. Truth tables are used to show the states of each terminal and hence the logical operations.

Building Functions: Logic Gates • NOT: • AND: • OR: • Logic Gates digital circuit that either allows a signal to pass through it or not. Used to build logic functions There are seven basic logic gates: AND, OR, NOT. A

Logic Gates • digital circuit that either allows a signal to pass through it or not. • Used to build logic functions • There are seven basic logic gates: AND, OR, NOT, NAND (not AND), NOR (not OR), XOR, and XNOR (not XOR) [later] Building Functions: Logic Gates AB Out 00 0 01 1 10 1 11 1 AB Out 00 0 01 0 10 0 11 1 AOut 01

Building Functions: Logic Gates • NOT: • AND: • OR: • Logic Gates digital circuit that either allows a signal to pass through it or not. Used to build logic functions There are seven basic logic gates: AND, OR, NOT,

Logic Gates • Digital circuit that either allows signal to pass through it or not • Used to build logic functions • Seven basic logic gates: AND, OR, NOT, NAND(not AND), NOR(not OR), XOR XNOR(not XOR) 9 Did you know? George Boole Inventor of the idea of logic gates. He was born in Lincoln, England and he was the son of a shoemaker.