Logic circuits Definition and 18 Threads

In the attached image, there are two quantum circuits that are equivalent. I am trying to understand how. Let's call the top qubit ##q_1## and the bottom one ##q_2##, and the outputs ##q_1'## and ##q_2'##. From what I understand, the C-NOT gate doesn't affect the control qubit. Because Hadamard...

Homework Statement Design a circuit with four inputs and two outputs which realizes the functions : f1 = Σm(0,2,4,5,6,14) f2 = Σm(0,1,4,6,12,14) Homework Equations - The Attempt at a Solution Here's my work : 2 levels (NAND / OR ) 10 gates 17 gate inputs 2 levels ( NAND / OR ) 7 gates 11...

Homework Statement So this is not homework or an assignment, but usually my questions get moved here anyway. This is from a project I'm working on for my job. A user can choose between DPDT functionality (so having "SensorI" be a doorway that goes up and down, reverse) or add another sensor in...

Hi fellow forum-ers :), I have a test in about two weeks where i am going to be given a dtl or ttl circuit which i have to analyse and calculate its function. The professor said that the circuit given to us will always be a useful and existing one meaning he's going to give us some NAND, NOR or...

Homework Statement Realization of given three functions $$ \begin{array}{c} f_{1}=x_{1}\bar{x}_{2}\bar{x}_{3}+x_{2}x_{3}\bar{x}_{4}\\ f_{2}=\bar{x}_{3}x_{4}+x_{1}\bar{x}_{2}\bar{x}_{3}\\ f_{3}=x_{2}x_{3}\bar{x}_{4}+\bar{x}_{3}x_{4} \end{array} $$ using the PLA. Homework Equations I don't know...

At our class on digital structures, this assignment has been given. It's a preparation for upcoming lab work, and I'm not sure my design is correct. Is anyone please willing to check it out? 1. The problem statement, all variables, and given/known data Design a two-bit comparator using NOR gates...

Homework Statement We are asked to make a subtractor circuit which has a 2 bit, 2 input data. Homework Equations A1A0 _ B1B0 _________________________________The Attempt at a Solution I would have a 3 bit output with one borrow. The problem is I am stuck at this point and am having...

Homework Statement Design a combinational circuit that multiplies two numbers together, and outputs the result. Homework Equations The biggest product will be 3 * 3 = 9. Four bits to represent the product. 0: 00 1: 01 2: 10 3: 11 I need a 4 bit register for the outputs The Attempt at a...

Hey guys, I'm in a pickle with this question. Its really not my cup of tea, its a struggle factor really but I don't really have a choice whether I like it or not. A worked example such as this allows me to see what it is I need to do. If anyone can provide a helping hand it would assist me...

Tried using the template, had to put pictures because this concerns a diagram question! sorry guys! 1. Homework Statement Consider the circuit shown in the figure below which consists of a positive edge triggered flipflop with selective load capability (identified as MICK) and a level...

Homework Statement The Attempt at a Solution Is my solution correct or can I simplify it even further?

I know that if 1 and 0 goes through an OR gate, it gives 1. But how does the 1 come? how it works? thanks

Homework Statement Draw a logic circuit for the boolean function ((p+qr)')(pq+r) do not simplify the function first The Attempt at a Solution I got this: http://screencast.com/t/BC4akgo9J but I'm pretty sure it's wrong because of the first part how the bar goes over the whole...

EDIT: I was being stupid and forgot the first diode would turn off after i worked out stuff for diode C, thanks anyway, solution found!Hi I'm having some trouble getting the correct output voltage when i model the diodes using a voltage ofset and resistors. A = 4V, B = 2V, C = 3V Using Voltage...

Homework Statement So I have four bits input(X0,X1,X2,X3), and I need to check if these four bits are monotonic sequence. I got the following function: Y0 = X2X1X0 + X3'X2'X1' + X3'X2'X0 (Y0 - the output 1 when X0>=X1>=X2>=X3) Y1 = X2'X1'X0' + X3X1'X0' + X3X2X1' (Y1 - The output 1...

Homework Statement A counter has two state outputs y1 (the more significant bit) and y2 (the less significant bit) and a control input x. When x = 0, the states of the counter’s flip-flops do not change. When x = 1, the states of the counter’s flip-flops cycle through the codes of a 2-bit Gray...

could anybody suggest me a good learning material for 'digital logic circuits'

hey I'm really really new to this site and I hope I can get some help. I have a report for the logic circuit lab tomorrow, we need to draw the circuits on the computrer to represent it in the report.. I have no idea about any programs names. so I hope I can get some names for some small...