Counter Definition and 213 Threads

Is there any software that shows the frequency of audio input as digital display?Tuner softwares can not read frequencies above 1 khz regularly.The following link is an example of a tuner screenshot. http://www.techmind.org/audio/mustun.gif

Exam question: Use J-K flip-flops to design the logic for a synchronous up/down counter that counts "up" through the sequence 1 2 6 3 5 7 f the input switch UP is 1, and "down" through the sequence 7 2 1 5 3 6 if UP is 0. Verify that the counter is self-starting. What I know so far...

Which frenquency would a frequency counter count if its connected to an antenna that is receiving several frequencies close to each other in amplitude?

Hi there Im building a 7 segment display that counts to 10 when a switch is activated .. this is on Multisim. I've built it to how i think is correct .. Unfortunatly is doesn't seem to be doing anythin at all .. Any help is appreciated

hey, I've been looking at ways to create a LED chaser using a 555 timer chip and 2 x 4017 decade counter chips(more than 10 LEDs). mind you I've only been working with these chips for an hour. so here's the dilemma, I'm not quite sure if I'm right on connecting the 2 chips. what i did was...

Hi i know that this is probably not the best place to look for help but i have been to a lot of forums with no real result . The problem i have is that we changed the motor on my car form a 4 cyl 2l witch gave me 2 pulses per revolution to a 2.5 v6 but this motor gives 3 pulses . its form a...

Homework Statement I'm working on this problem but everytime I tried to walk through my answer it doesn't seem right. I wanted to built a ripple counter, up counter with mod 13 using D flip flop. Homework Equations present state ABCD - 0000-->1101 next state ABCD - 0001-->0000...

what can be the frequency for the clock signal that is to be counted? I read on another website that it is a minimum of 2MHz! to run optimally...that is. Well I am trying to count heartrate from a microphone that is amplified and filtered to look likea square wave or pulse train...Not sure yet...

I have limited hardware components I can use for this obstacle. Let's say I have precision rectified the input heartbeat signal into a square wave... I am trying to count the number of squarewaves/heartbeats and display them on two 7-segment displays refreshing every 15 seconds... I can only...

I have limited hardware components I can use for this obstacle. Let's say I have precision rectified the input heartbeat signal into a square wave... I am trying to count the number of squarewaves/heartbeats and display them on two 7-segment displays refreshing every 15 seconds... I can only...

Im creating a counter in multisim with four seven segment displays. My task is to make them count from 59.59 - 00.00 My question now is how do i make it stop on 00.00 and how do i do so when i reset it so it says 59.59 and not some random numbers.

I can't figure out why? I inverted every CLK signal and nothing happens I switch every Q' to Q and nothing works help, me its a 8 bit up counter but Its counting down I have 3 jks

In DCQE, if you leave out the coincidence counter, does it effect the results at D0? Or is it impossible to know? What I want to know is...do you collapse the wave when you measure the particle...or does that information need to be accessible to a human observer. Or even simpler...in the...

I need some help how to build 8 bit up/down counter for my tracking ADC. All ideas are welcome.

How to calibrate a homemade Scintillation Counter? Greetings, I have recently built a homemade scintillation counter using a surplus photomultiplier tube (PMT) and it seems to work very well in the photon counting mode. Problem is, I would like to get some idea of how efficient the overall...

I think I am missing something in Schrodinger's Cat... Wouldn't the Geiger Counter cause the wave function of the decay to collapse because the Geiger Counter is interfering with the wave function? Would the Geiger Counter end the superposition of the particle? Does the problem lie with what the...

I have to design a counter using T flip-flops to count in the sequence 000, 100, 111, 010, 011, 000,...(repeat). I think I got the code for the T flip-flop but not really sure and need some help implementing the counter with this. Any help would be great. Thanks //T flip-flop library...

Homework Statement guys i have given following question "Brief out how you realize a 4 bit asynchronous up counter using flip flops." my english is not good so please explain this question to me (in simple) Homework Equations The Attempt at a Solution

I've been thinking about the double slit experiment - the one with single photons going thru two slits forming an interference pattern never the less. Now, one thing i was unable to find clarification for is the claim that placing a detector even in just one of the slits to find out thru...

Homework Statement In a local bar, a customer slides an empty beer mug down the counter for a refill. The bartender is momentarily distracted and does not see the mug, which slides off the counter and strikes the floor at distance d from the base of the counter. The height of the counter is h...

Hi! I`m new here and I need some info where I can find project about building Geiger counter and where I can order the electronical components with shiping to Europe (Macedonia) :confused: Please help me!

Hi all, First a little background. I am reading "The Elements of Computing Systems" and one project was to build a 16 bit program counter but having a tough time. I am reading for pleasure not for any course. The following pc hdl file gives me the proper output (listed below pc file) up to...

V(x) = \left\{\begin{array}{ll} 0, & \exists n\in\mathbb{Z},\; x\in [2nL, (2n+1)L]\\ \infty, &\exists n\in\mathbb{Z},\; x\in\; ](2n-1)L, 2nL[\\ \end{array}\right. This is a periodic potential. L is some constant. Is a solution \psi(x) = \chi_{[0,L]}(x)\;\sin\big(\frac{\pi x}{L}\big) of the...

All right, I was just wandering about something. First, when we have a electric generator, than the rotor in it will rotate easily until current is drawn from it, correct? In other words, counter torque won't be produced until current is drawn. If this isn't true, than just stop reading the...

[SOLVED] Radioactivity -- Why no reading on Geiger counter? Homework Statement A magnet is directly between a Geiger counter and a material that is know to be radioactive. If the Geiger counter does not register any radioactivity, what kinds of particles is the radioactive substance emitting...

i understood that each time a digit complements and complements the next digit etc.. but i can't see how it works because if its truee then from the 0000 state by one pulse we will have 1111 i can't ubderstand how we get the numbers between here is circuit...

Hey guys I am currently building a digital integrator for my senior design project. The project consists of An A/D, UP/DN counter, Adder, Register and DAC. The parts I am using are : A/D: AD7821 UP/DN: 74191 Adder: 7483 Register: 74198 Im cascading the 74191 and the 7483 to get 8 bit...

I've seen the designs using the 555 timer as the base and making a 2 led IR emitter. These examples use 5v and only two leds to send the 40k signal. http://www.reconnsworld.com/ir_ultrasonic_555timer40khzir.html I would like to modify this design to run off 12v and use 8 infrared leds. I...

Hallo friends, I have some Geiger counter for detecting Gamma rays...By this meter one can measure in IPS (Intensity per second) or Siever/hour...Now i need to know What is this new unit IPS...Does anyone heard about it...or does it directly corresponds to the disintegrations per second...

Homework Statement in practice is is assumed well insulated heat exchangers are adiabatic. With reference to this heat exchanger, carry out the necessary calculations and then give an opinion as to the validity of this assumption. Homework Equations Observation Thotin 55.88, Thotmid...

Homework Statement Create a mod-11 ripple counter using Flip flops and standard logic gates. Only usable flipflops are T,D, and JK. I've used T.Homework Equations Using Quartus II simulation softwareThe Attempt at a Solution I have the block diagram all done and the simulation. Everything...

Hi there, I am working my way through some past exam papers and am stuck on this question, the answer that was given to me with the past exam was wrong so I have no reference, I cannot find anywhere on the net or in books the type of cct I am trying to design. In previous parts of the...

Homework Statement In a local bar, a customer slides an empty beer mug down the counter for a refill. The bartender is momentarily distrated and does not see the mug, which slikde off the counter and strikes the floor 1.40m from the base of the counter. If the height of the counter is 0.860m...

Hey, How do u arrive at the state diagram for a scale of 10 gray code counter? I know how to draw all the used states, but the problem comes when the unused states are considered. The unused states namely are:1100 0100...

I thought it might be interesting to see how many counter quotes can be found to respond to a given quote. For example, one that hit me some time ago was that of reasonable people. Quote: "The reasonable man adapts to the world around him, while the unreasonable person tries to change...

Homework Statement (Problem 205) Design a synchronous counter that has a Moore output decimal sequence of 0, 1, 3, 5, 7, and then repeats this same sequence over and over. To ensure illegal state recovery, force all unused or illegal states to go to 0. Carry out the design using positive...

Homework Statement How many flip flops are in a 16bit counter? its actually an interview question, not homework per se. Homework Equations none The Attempt at a Solution I thought it was 4 since we have 2 inputs from 4 flip flops giving us 2^4 = 16 ? however I'm told that its...

Im not sure if this is the right place to post this but here's my question. I have to create a counter that outputs a 1 every 4th clock cycle. I can't make a truth table because it doesn't really make sense. I am a newb to digital logic and suck at it. Any one have any help. Thanks Jason

Hello. I am writing a program, but I can't figure out how to do something. I want to do something like this: Sample input: abcdeft 01234567 asfgSample output: The length of line 1 is: 6 The length of line 2 is: 7 The length of line 3 is: 3

This is a UART problem, we need to design a counter for the receiver unit. And the specs go like this: system clock is 20 MHz, while data arival frequency is 2MHz, also I need to assert a STOP_RECEIVING signal once all data is received. And of course, data has a start bit and a stop bit. And...

HEllo everyone. I'm trying to find a counter example that will prove this false. But it may be true but I'm hoping it isn't :) For all integers a and b, if a|10b then a|10 or a|b. I said false, a = 3, b = 5. 3 is not divisible by 50. 3 is also not divisble by 10 nor 3 divisible by 5...

Hello everyone. I'm wondering if I'm allowed to use a counter example to disprove this. I'm not sure if I'm understanding the statement correctly though. THe directions are: Determine whether the statement is true or false. Justify your answer with a rpoof or a counterexample. Here is...

Hey, I have some problems with my synchronous counter. Here is what I got. sorry for the big and bad quality of the pic. My scanner sucks :( Here's the karnaugh map. I need to simplify them and use only NAND and inverters if needed. http://img101.imageshack.us/img101/7335/hw4na.jpg I need to...

Hi everyone. There are 2 questions i cannot solve here. So i am hoping someone here can help me out. Here are questions: (1) Design a synchronous counter using J-K flip flops which will count through the sequence 0, 2, 4, 6, 8, 10, 12, 14, 0. (2) Design a synchronous down counter using...

i need to get this array to calculate the numbers that are less than the average and greater than or equal to the average. first of all, i need to figure out how to make a counter to count the average of the array! i can't find the code in the textbook here's what i have so far: #include...

Firstly I would like to point out I have absolutely no idea what I am doing and will most likely be blind or dead by tomorrow. But anyway. I've finally finished me first turbo jet engine (from scratch I would like to add and designed myself and dodgy as I am pretty convinced that it won't...

Firstly I would like to point out I have absolutely no idea what I am doing and will most likely be blind or dead by tomorrow. But anyway. I've finally finished me first turbo jet engine :approve: (from scratch I would like to add and designed myself and dodgy as :biggrin: I am pretty...

In this problem I am getting stuck on how to find the potential difference. I don't know where to begin. In a Geiger Counter suppose the radius of the central wire is 145 micrometers and the radius of a hollow cylinder is 1.80 cm. What potential difference between the wire and the cylinder...

I'm supposed to build a 4 bit synchronous up counter that counts in binary from 1-12 and restarts. I've made a circuit similar to the image shown below. My question is, what do i do to make it count from 1-12 instead of 1-16 and restart back at one...

A particular Gieger counter has a metal cylinder with an inner diameter of 2 cm along whose axis is stretched a wire with 44 N of tension. The potential difference between the wire and the cylinder is 890 volts. The wire has a length of 6 cm and an outer diameter of 1.5 X 10-4 cm. A. To find...