Input Definition and 619 Threads

Homework Statement Alright, so for my engineering programming class I have an assignment where I have to create a program with an array, and then do things with the array, such as create a search function for it, and list how many numbers fall within a certain range, ect, ect. So I...

Homework Statement An inventor claims to have developed an engine which takes in 1.1x108J of heat energy at 400K, and rejects 5.0x107J of heat energy at 200K. Would you advise investing in this project? Explain your answer. Homework Equations W = Q1 – Q2 η = W/Q1 = 1 – Q2/Q1 The...

We can use NAND gate only to get ( XOR gate ) of 2 input ( A and B ) : By using (4) NAND gate : The output of 1'st NAND : (AB)' The output of 2'nd NAND : ((AB)'.A)' = (A'B) The output of 3'rd NAND : ((AB)'.B)' = (AB') The output of the hole circuit will be: ((A'B).(AB'))' = AB'...

I'm having a really hard time understanding input vs. output impedance and also the usefulness of the Thevenin model. Let's say we have a simple voltage divider consisting of two equal resistors. The output voltage is between the resistors. If the input voltage is 10v the output voltage has...

Homework Statement Find the power input of a force \vec{F} acting on a particle that moves with a velocity \vec{V} for each of the following situations. \vec{F} = 4\hat{i} N  + 3\hat{j} N , \vec{V} = 7\hat{i} m/s  \vec{F} = 7\hat{i} N  - 5\hat{j} N , \vec{V} = -5\hat{i} m/s...

Please see attached schematic. Basically the diagram shows a single channel of a 32-channel digital input card for an industrial controller. My diagram represents this configuration with the 24V supply externally sourced to terminals 65 & 66. The question is what is the purpose of the...

I am having trouble getting the users input in a search bar, and returning back information. I do not know where to start. The information being read is in an XML file. I have the search bar up and the user can type in it, I also have a button that can be clicked, however nothing happens when...

I have a function in Matlab that finds the roots of a system of nonlinear equations. It calls for the system function, which is unique to each nonlinear system that I am trying to solve. What I am trying to do is write a code that uses my root function to solve my system function. However, I...

Homework Statement For the state table shown below, show the output sequence when the input sequence is as given below. Assume the machine starts in state A. x : 1 1 1 1 1 0 1 1 1 0 1 1 0 0 1 1 1 1 0 1 1 z : x>0...1 A A,1 B,0 B A,0 C,1 C D,1 A,0 D A,0 B,1 Homework Equations N/A The...

Are there simple programs where you can put formula and it asks for the inputs and output the results? For example, the program wants to solve for e=mc^2 It asks c, it asks m, then it outputs e? Needs pc program and apple itune application for this. Just a simple program. Thanks.

edit: you aren't proving it's LTI, you proving it COULD be lti Homework Statement the question: could the following system be LTI? x(t)=-5cos(2t) --> y(t)=exp(-2tj)Homework Equations the chapter is about eigenfunctions of LTI systems, which are of the form exp(st).The Attempt at a Solution So...

Realize (a'b'c'+a'bc+ab'c+abc') using only 2-input x-nor gates. I've taken a shot at this, however I'm only able to but it into more or gates. a'(b'c'+bc)+a(b'c+bc') a'[(b'+c)(b+c')]+a[(b'+c')(b+c)] a'(b'c+bc')+a(b'c'+bc) That's where I got, however it's really no simpler and I doubt is...

I have a question, how can I make an output file that takes the name of the input file and replaces the .txt extension with "_out.txt"? For example, an input file with the name “new.txt” would result in an output file named new_out.txt”. my friend told me to use strcat, but that just adds...

Hi all, I'm a bit confused about the polarization state of the photons after the BBO. I am aware that they are polarized orthogonally, but are they polarized according to a certain axis? The reason I'm asking is that one article I read seems to imply that that's not the case: i.e. the...

hello everybody. i have a quick question. i am going to make a shape memory alloy model in ansys workbench 12.0 . as workbench does not have the SMA model, i have to make material properties in mechanical APDL and then make an input file. but i don't know how to define properties and make the...

Homework Statement Here is a picture of the problem http://i1226.photobucket.com/albums/ee410/jean28x/37A91AE5-904B-45C1-8A04-C5855FF971D8-87001-000004D91E955189.jpg Homework Equations Im guessing Vo = Avo VL (RL/(RL + Ro)) The Attempt at a Solution The solution is...

Hi there, I've got these questions to do, and I've looked at the formulas and can't seem to plug in the numbers with the values I've been given. I think I'm missing something somewhere, if someone could just start me off, or be so kind as to go through the method so I know for the future...

So last night, a bit on the tipsy side, I drew this on paper(then in paint) and I don't see why It would not work. I'm not really an engineer so I'm not sure if there's some flaw in my logic. The idea is based on a 5HP engine with an electric starter. It automatically starts the engine using a...

help! Input output characteristics of BJT I have attached an image of the graph. Does this graph apply for both npn and pnp transistors. I have asked this because for pnp, the collector(c) and base(B) terminals must be reverse-biased at the active region, and B must be at a higher potential...

I have an ode function which is of the form: function [output]=Fun[input1,input2,input3] which is solving a set of non-linear differential equations. input1 and 3 are fixed but input2 is a variable. Say: input1=3; % a constant input3=20; input2=[2 4 6 8]; function Fun is being...

μμHomework Statement Permeability of free space: symbol: μ value: 4∏x10-7 Homework Equations How would this be input to a calculator? (4∏)x10-7 4x ∏x10-7 The Attempt at a Solution so the actual number is 1.2566x10-6 is it?

I'm trying to pull in an ATMEGA168A-PU Atmel 8 Bit 16K AVR Microcontroller into Eagle and have looked through the libraries provided through their website, does anyone know where i can find it or and equivalent controller?

I am working on a program that compares the monochrome intensities of two circular objects within a greyscale image. However, because I'm a beginner I don't know how to have my program locate where these objects are. This means I need to manually input the radius and position of each circle to...

I tried to googling about this, but not find the answer; and even I'm not sure whether this is possible. Here the condition: I have a Windows laptop and a Linux workstation (workstation + monitor). The monitor is connected to: (1) DVI-D: connected to Linux workstation (default) (2) Display...

Can anyone give me a type for calculating the power input on air compressors ? Thanks in advance !

Hello, I am 17 years old and studying Mechanical engineering an i started thinking of creating some sort of game ( a bit boring) where children have to grab different coloured balls from a tank of water, i was wondering how to create a dispensing system to allow balls from a dispenser in which...

I have an assignment where we have to ask the user for a number of data points which then we will graph a linear regression. Enter the number of input data points: 7 Enter [x y] pair for point 1: [1.1 1.01] Enter [x y] pair for point 2: [2.2 2.30] Enter [x y] pair for point 3: [3.3 3.05]...

After MUCH consideration, I think I want to be a software engineer. Why? Because I think it's the most marketable degree that will suit my skills in math / problem solving / logic. I am currently going to a 2 year community college. The fall will be my last semester at this 2 year college...

If we have a input voltage that has a voltage higher then the linear region of the amplifier characteristics graph, what does amplifier biasing exactly do to the wave so there is no clipping, distortion or cut-offs and saturations.

Engineering Physics: Am I "marketable"? Any input is appreciated! :smile:Hello PF community! If this thread counts more as career guidance, then mods, please move, thanks! Anyway, first time poster here! I'm 20 years old and currently attending a community college in California. Hopefully...

What is an "Active*low*Input*and edge* triggered input?" I have been reading up on Flip Flops but can't find anywhere that explains in simple terms what an Active low input and edge triggered input are. Can someone help me understand it please? Thanks

printf("\nSpecify ascending ['a'] or descending 'd' >> ");scanf("%c",&pref);flushInputBuffer(); extract_array(s,n,crit,array1);extract_array(s,n,2,array2); if (pref == '\n')pref = 'a'; printf("\n%c\n",pref); So the above is a snippet of code from one of the programs I am writing. My...

sketch the spectrum of the PAM signal S(f) if the input is m(t)=cos(2*pi*fm*t) where fm=3000 at a sampling rate of 10000 using rectangular pulses of duration 0.04ms. in the range +-15Khz S(f)=H(f)*M'(f) taking the Fourier transform of the rectangular pulse we obtain: H(f)=Tsinc(Tf) where...

Homework Statement For a transformer, the ratio number of turns on the transformer secondary : number of turns on the transformer primary = 21 : 1200. If the input voltage is 120V AC, what is the output voltage? Homework Equations \frac {N_{P}}{N_{S}}=\frac {V_{P}}{V_{S}}...

Homework Statement Given transfer function : H(s)=Vo/V1=(10/s)/(4+0.4s+(10/s)) and the input voltage is given as V1=10(u(t)-u(t-0.1))V. Use the convolution integral to find Vo for t>=0.1 Homework Equations convolution integral..its hard to write and laplace table The Attempt at a...

Homework Statement An LTI digital system with impulse response h[n] = 2(1/4)^n u[n-1] produces an output y[n] = (-3)^n u[n-1]. Determine the corresponding input x[n]. Homework Equations I believe that Y[z] = X[z]H[z] The Attempt at a Solution So I started by finding the...

Ok so this is my altered and rephrased question. I need help programming something that uses an input. Now it is not as simple as it sounds because I want the user of the program to be able to run the program and have several things happen. When he/she runs the program I want him/her to press...

I felt like learning a bit about file input and output in C++. Tried some code, couldn't get it to work unless I made the path to the file a string literal, not a variable type. Why is this, and is there any way to get a string data type to be inputted as a path?

Homework Statement Write a routine that accepts two integers i and j as arguments, calculates the quotient and remainder of i and j, and generates a string in memory that stores "The quotient of i and j is i/j and the remainder is i%j". For example if the arguments was 15 and 7 the string in...

Homework Statement The experiment in my Physics lab today was to determine the mechanical advantage and efficiency of various pulley systems. My calculated work output is higher than my work input, which is causing an abnormally high value for efficiency, and I am attempting to find the source...

Homework Statement Homework Equations values in part (a) and (b) which i had found: gm = 2.2mS ro = 25kΩ Rin = 1MΩ Rout = 446.43Ω Av = 0.99 The Attempt at a Solution all that i know is that when they refer to pinch off region, it is referring to the saturation region...

Homework Statement The signal s(t) is a deterministic signal with the finite duration (0,Ts) and the energy Es=∫s2(t)dt. In the following system, n(t) is a normal noise with the mean zero and the power spectral density Gn(f)=η/2. Show that no(Ts) has a normal distribution with the mean zero...

here is my MATLAB code of SCFDMA i am getting error at line "psFilter = rcpulse(Ts, Nos,rolloffFactor);" error is Undefined function or method 'rcpulse' for input arguments of type 'double'": function paprSCFDMA() dataType = 'Q-PSK'; % Modulation format. totalSubcarriers = 256; % Number of...

I have this Sony Laptop, the adapter has the following specifications: These are the input and output values of laptop charger. 19.5V written in bold on top Input:100-240V~1.3A 50-60Hz Output: 19.5V---4.7A, the dotted line also has straight line above it, I don't know what's that symbol...

I am writing a MIPS SPIM program that will take integer input, and output the corresponding words. For example, if 123 is input, then one two three will be output. I can input an integer but I get zero repeating infinite times as the output every time. Any help is appreciated. My source...

Homework Statement Given: Impulse response: h(t) = u(t-1) - u(t + 1) (where u(t) is the unit step function) System input: x(t) = t*u(t) - t*u(t-2) Determine System output: y(10) = ? y(1) = ? max y(t) = ? |y(t)| is max at t = ? Homework Equations Convolution integral? y(t) = -∞∫∞...

The input for a function can be another function. If h(x) = 2x - 5, determine a simplified expression for each of the following. a) h(4x) b) h(2x+3) h(x/2-1) h(x) = 2x - 5For a) h(4x) it can be h(4x) = (4)2x - 5 = 8x -5 however I am not sure why the 4 was not applied to the -5 also. I am not...

I want to implement a three input majority logic (when at least two of its inputs are 1, the output will be logic 1) by using only 2-input NAND gates. It is required to find the most simple one, with the lowest number of NAND gates, I could construct one with 6 NAND gates, but does anybody know...

Hello all, In one of our labs we determined the input impedance of a FET amplifier circuit via a potentiometer. We were told it was due to "maximum power transfer theorem" (something we have not learned yet). Essentially we attached a potentiometer in series with the input of the circuit and...

My dad is an electrical engineer, I am not. I am just a dumb race car driver. That said, I want to not ask him too much about all this stuff since I want to not look like a complete idiot. I feel that some of this stuff should be somewhat common knowledge, but alas, I am drawing a blank. I...