• • Logic.ly Download a Free Trial of Logicly Learn More » Simulate with Logicly AND Gate Input A Truth table for an AND gate Input Output B false false false false true false true false false true true true Logicly provides an engaging, hands-on learning environment for teaching logic gates and circuits. Download the Free 30-Day Trial today to evaluate Logicly in your classroom or lab. Learn More » Trusted by Teachers An AND gate is a digital logic gate with two or more inputs and one output that performs logical conjunction. The output of an AND gate is true only when all of the inputs are true. If one or more of an AND gate's inputs are false, then the output of the AND gate is false. The truth table for an AND gate with two inputs appears to the right. Symbols Each of the symbols below can be used to represent an AND gate. There are multiple international standards defined, and one may preferred over the other in your region of the world. ASNI / IEEE IEC I just wanted to thank you for creating the Logicly gate simulation. I am an IT teacher using it with my sixth grade students. It is an incredible resource. Michael Gamson, Hillel School of Tampa Enjoyed by Students I'd just like to thank you for making Logicly. I found it very useful when I was trying to design circuits for my engineering course at University. Andrew Sum Live Example Try the following interactive example to see for yourself how an AND gate behaves. Object 1 Further Reading To learn more, check out the following external resources: • • • AND gate on Wikipedia Multiple-input gates on All About Circuits Basic Logical Functions and Gates at Play-Hookey « Table of Contents Copyright 2008-2020 Bowler Hat LLC. All rights reserved. • Start your free trial! • Pricing & Purchase • Help • • • • Contact Blog Facebook Twitter W e Enter a term... b Advertiser Disclosure o p e • BROWSE TERMS d i • DID YOU KNOW? a • • • • • S e a r c h MAIN REFERENCE ALL CATEGORIES STUDY GUIDES IT CERTIFICATIONS SPONSORED Advertisement Object 2 Main » TERM » F » LATESTGUIDES STUDY ARTICLES Texting & Chat Computer Architecture Abbreviations Study Guide From A3 toarchitecture ZZZ we list provides 1,559 text anmessage introduction and to WEBOPEDIA NEWS floating-point numberComputer systemchat online design abbreviations basics for most to help computer you translate science and understand students. Read today's Moretexting » lingo. Includes Top... Read More » Network Fundamentals Study Guide Huge List fundamentals of Computerteaches Certifications Networking the building blocks Have of modern you The heard network about design. a computer Learn different types of A real number (that is, a number that can contain a fractional part). following Relatedcertification Terms program but networks, concepts, can't figure architecture out if it'sand... right for Read you? More Use » are floating-point numbers: this handy list to help you decide. Read More » The Five Generations of Computers • Bates Number Learn about each of the five generations of 3.0 • sector number computers and major technology developments that • devices Fibonacci numbers -111.5 have led to the computing that we use... Read More » • turing number Stay up to date on the latest developments in Internet terminology with a free newsletter from Webopedia. Join to subscribe By Vangie Beal now. ½ 3E-5 The last example is a computer shorthand for scientific notation. It means 3*10-5 (or 10 to the negative 5th power multiplied by 3). In essence, computers are integer machines and are capable of representing real numbers only by using complex codes. The most popular code for representing • • • • • • number cruncher Local Number Portability Object 4 3 Object wireless number portability TSN - Transmission Sequence Number LUN - logical unit number ESN real numbers is called the IEEE Floating-Point Standard . The term floating point is derived from the fact that there is no fixed number of digits before and after the decimal point; that is, the decimal point can float. There are also representations in which the number of digits before and after the decimal point is set, called fixed-pointrepresentations. In general, floating-point representations are slower and less accurate than fixed-point representations, but they can handle a larger range of numbers. Note that most floating-point numbers a computer can represent are just approximations. One of the challenges in programming with floating-point values is ensuring that the approximations lead to reasonable results. If the programmeris not careful, small discrepancies in the approximations can snowball to the point where the final results become meaningless. Because mathematics with floating-point numbers requires a great deal of computing power, many microprocessors come with a chip, called a floating point unit (FPU ), specialized for performing floating-point arithmetic. FPUs are also called math coprocessors and numeric coprocessors. 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