Logic gates Definition and 66 Threads

  1. A

    Designing a Logic Gate Hardware for Efficient Table of Logic

    Hello Forum , please can someone help me to design the hardware of this table of logic (by the use of the logic gate) , the table is in the attachment. Thanks in advance
  2. L

    Constructing Logic Gates on a Breadboard

    I've been reading articles on logic gates and What I want to do before I get to school is familiarize myself with what individual components are used in making those individual gates on say a breadboard.I keep searching for it on the web but it just gives me the schematic symbols and not what...
  3. K

    Self-Adjoint Operators and Reversible Logic gates

    Does anyone know if there is a relationship between the requirement in Quantum Computing that logic gates be reversible and the requirement in Quantum Mechanics that observables have to be self-adjoint?
  4. C

    How Can You Design a Circuit Using Only AND and NAND Gates with Four Switches?

    Homework Statement Using only AND and NAND gates, design a circuit in which 4 switches must all be turned on before a switch in another circuit turns off. i think half the reason i don't understand may be the wording of his question, i know the tables but i am not sure how the logic gates...
  5. H

    How Do AND/OR Logic Gates Work with Diodes?

    http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/diodgate.html Could someone please explain to me why these circuit arrangements act as AND/OR gates, can't find a decent explanation in any of my books
  6. C

    Logic Gates: Basics & Uses for O-Level Students

    Hi! I'm new to this forum, just joined a couple of hours ago. I am an O-Level student and I am currently on revision leave. I would like some explanations on the basic working principle of logic gates and their uses in special circuits. The clearer the explanation the better and some links to...
  7. E

    Can u make if A>=B then output=1 Else output=0 using these logic gates?

    [SOLVED] can u make "if A>=B then output=1 Else output=0" using these logic gates? Homework Statement this is not quite a homework problem. I am designing a device and I need to use A>=B comparator. The challenge is I need to do this using only NAND, AND, NOR, OR and ExclusiveOR gates...
  8. R

    Diode Logic Gates circuit analysis?

    I need to understand how diode-resistor gates work. I've read a lot about what's supposed to happen based on inputs, but I need to see some numbers & analysis to understand what's going on. Where do you start in terms of trying to analyze the following AND gate...
  9. R

    Logic gates problem Need to check if my answers are correct

    [SOLVED] Logic gates problem...Need to check if my answers are correct.. Homework Statement http://img132.imageshack.us/img132/8899/19367959nt9.jpg Homework Equations The Attempt at a Solution http://img220.imageshack.us/img220/2338/answerslo5.jpg Now I wasn't sure how...
  10. M

    Understanding MOSFET Logic Gates: Source, Drain & Ground

    I'm doing logic gates using their basic components MOSFETs. I have no idea how to understand which is the source and drain of the transistor from a symbol diagram when given both the n type and the p type. I also cannot understand what happens when the source is connected to ground. Can someone...
  11. W

    Cs major questions on logic gates

    The very first part of the "electrical engineering and computer architecture for programmers" course I took glossed over a few things, and I have about 3 more questions, and thought I'd try online. They're in a fairly long html file with several diagrams, at...
  12. P

    Draw Logic Gates: Find a Program to Create Gate Diagrams

    Drawing Logic Gates! hey guys, im new to this posting thing on this site...if any of u belong to bossgtcentral.com, i am xcortman there lol... Anyway guys i am looking for a program that allows me to enter a boolean expression no matter how complicating it is and i want it to give me the Logic...
  13. C

    Why Are Logic Gates Essential in Computing?

    Hello all Just refreshing for computer science midterm, and need to review logic gates. What exactly are logic gates? I know that they include AND OR XOR etc... but why is it really needed? Could you please provide some examples of their effiiciency in the real world? Thanks a lot
  14. N

    What software can I use for drawing Logic gates?

    What software can I use for drawing Logic gates? I am just too lazy to draw it by mouse and also drawing gates with different shape isn't elegant. So, I want a simple software that can draw Logic gates, And, OR, gates etc...
  15. S

    How Can Multiple ALUs be Connected to Create a Layered Structure?

    If I have an 8-bit ALU, how would I hook them up to do the layer thing (I don't know the name)? It's the thing that you start with 4 ALUs, then they go down to 2, then those go down to 1. Are all the inputs for each of the original 4 seperate, or do they share some inputs? How to two go down to...
  16. S

    Question: How can logic gates be used to create a 1 bit computer?

    Anyone know of a site that explains a 1 bit computer made from logic gates, or at least what all is needed for a one bit computer (all I know is an ALU)?