Data are values of qualitative or quantitative variables, belonging to a set of items

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-3
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0answers
15 views

Difference between bitrate and data rate?

What is the difference between bitrate and data rate? Are both related to sending speed (not considering whether they are received correctly or not)?
-1
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1answer
25 views

What is the definition of data rate? What is the unit of it? Is it related to successful bits?

What is the definition of data rate? What is the unit of it? Is it related to successful bits?
0
votes
1answer
37 views

How can the Nyquist theorem for the maximum bit-rate of a noiseless channel be derived?

I've been given the formula: $$ I = 2* H * log_2(L)$$ where: \$ I \$ = Maximum data rate in bits per second for a noiseless channel \$H\$ = Bandwidth that the channel will carry (that is, the range ...
4
votes
2answers
749 views

How does a ps2 mouse send data to a computer? [closed]

I want to read data from a mouse with the help of Arduino. I want to calculate relative motion between two objects. My questions are 1) Is it possible? 2) How is mouse interfaced with Arduino?
2
votes
1answer
55 views

AVR USART wait for AVR's reponse to continue text stream

AVR USART wait for AVR's reponse to continue protocol I am doing a senior project, and I need to send a large text file line by line to an AVR (atmega32) which will control a piano using ~36 ...
0
votes
1answer
76 views

Can We send data using exisiting power outlets in homes

I am trying to build a project in which I want to transfer data through existing power outlets in a home through power lines while simultaneously using those outlets for power supply also. My question ...
2
votes
2answers
161 views

2.5mm Jack to USB data Cable

I was recently diagnosed with Type 1 diabetes. With the need to test my own blood upwards of 8 times a day I have a ton of data to keep track of. My testing unit has the ability to upload its data to ...
0
votes
0answers
49 views

Microwave communication systems / data transfer rate vs data transfer speed

I'm researching about microwave communication systems, and I have to distinguish the difference between data transfer rate vs data transfer speed. I comment it will be something like you have a ...
4
votes
2answers
2k views

What data format do audio cassettes use?

How do the sound pressure values correspond to the magnetic domains on the tape? Is the format analog or digital?
0
votes
0answers
66 views

1 Mbps satellite channel with a 270 ms delay

Consider 500 byte frames sends on a satellite channel with a 270 ms delay on send an receive by 1 Mbps rate. by ignore the length of ACK message and using Slide Window technique, how many bits need ...
0
votes
4answers
122 views

How does a CPU choose a path? [closed]

This is the most baffling question of all other concepts. I ask my teacher "How does the computer choose a path?" "They program it" "How do they program it?" "..." I have a basic understanding ...
0
votes
0answers
23 views

Transmission using different frequencies [duplicate]

Consider three devices and a base station. Communication is only through radio waves. The devices are equipped with a simple radio that enables them to send and receive information from base station. ...
0
votes
2answers
68 views

communication 101 [closed]

I have a couple of really basic questions. (1) When a device(Device 1) communicates to another device(Device 2), do the devices have to operate in the SAME frequency for the data transmission to take ...
0
votes
2answers
93 views

Best way to wirelessly transmit and receive data

I'm working on a project that requires wireless transmission and reception of data. I wonder what the best technology would be. It is not tons of data maybe not even a kilobyte. And the range should ...
1
vote
0answers
77 views

Failure data of high-k dielectrics

How I can get access to failure data of high-k dielectrics caused by tunneling (trap generation)? I need a dataset for my research. (if someone could help me with the data, his/her name will be ...
2
votes
3answers
101 views

Data transmission through the human body

As we all know, data can be transferred through cables using electrical pulses transferred into binary codes. My question is, is it possible to transfer data in a similar manner but through the human ...
1
vote
1answer
57 views

Statistical noise measurement

Is there an accepted measure of noise in a data set? I am taking a series of reading from an ADC, which follow a trend (they are not random data points). However, they generally lie above and below ...
2
votes
1answer
168 views

Is there a spice directive to export waveform data in LTspice?

http://www.linear.com/solutions/1815 The above web-page explains how to export the waveform data to a text file. You basically run the LTspice simulation, clicking on the waveform window, go to ...
1
vote
1answer
100 views

How does USB 3.0 negotiate power states?

I noticed, in another question, a comment regarding USB power states. I know that USB 2.0 negotiated power by tying the D+ and D- lines to specific voltages but I can't seem to find any information ...
2
votes
2answers
101 views

Continuously log data from an oscilloscope

I have a pin which is being toggled every 100ms by an MCU. I need to plot a graph which consists of the variation from the desired interval . That is the number of times it moved away and was toggled ...
0
votes
1answer
76 views

frequency allocation for telecommunication companies

For a high bit rate in data communication we need a high bandwidth. Suppose there are hundreds of carriers in a particular region and they are all allocated microwave frequencies. Minimum spacing ...
1
vote
1answer
92 views

Measuring Stress with Sensors

I wanted to ask a few questions in the hoped that someone can advise me. Basically I wish to use a sensor which will be attached to a large piece of fabric, I would then like to use the data from the ...
20
votes
10answers
5k views

Why can't Wi-Fi run at 2.4 Gbit/s?

So Wi-Fi runs in the 2.4 GHz band, yeah (and the new ones 5 GHz)? Which means that every second, a Wi-Fi antenna outputs 2.4 billion square wave pulses, right? So I was wondering, why can't ...
0
votes
3answers
89 views

Signal to noise ratio for a non-physical property

The signal to noise ratio for a voltage, current, or power is easy to understand, but how do I calculate the SNR when the signal is not a physical property, but instead an abstract quantity? I'll try ...
-2
votes
1answer
96 views

I have a set of USB-classed barcode scanner and microcontroller board, how do I process the data?

Questions: Is the signal already readable for the microcontroller if I have both the scanner and the board match headed with USB? I know that the scanner was programmed to output whatever the bar ...
0
votes
3answers
160 views

Stereo to High Speed LED for Data Transfer

I am currently doing a project on optical data transfer using LED. The first hurdle I need to overcome is the LED driver circuit. I have little to no background in circuits. I do know a fair amount of ...
0
votes
2answers
51 views

Connecting DAQs in Parallel

I need to connect a DAQ to an existing system which uses a DAQ. The idea is to connect the DAQs in parallel so the existing system is not changed. It is likely that only one DAQ will be used at a ...
-2
votes
1answer
143 views

What actually limits the speed of a USB flash drive? [closed]

My system outputs data through USB which is to be stored in a external memory. But it seems that flash drive is not having that much speed like that specified in USB 2.0 protocol. What actually ...
4
votes
2answers
221 views

What are the most common data storage devices in small consumer electronics?

What are the standard ways of data storage in small consumer electronics (routers, phones, etc.)? For simple devices I guess microcontrolles with in-system programmable flash are enough, but for ...
3
votes
2answers
263 views

Will an SPI EEPROM chip have the same issues with non-atomic write operations as a dsPIC's internal EEPROM? [duplicate]

A while back I had some intermittent trouble with the internal EEPROM of a dsPIC. Every so often, some value in the EEPROM would be found zeroed out on power-on. I tracked the problem down to when the ...
6
votes
4answers
457 views

Will an SPI flash memory chip have the same issues with non-atomic write operations as a dsPIC's internal EEPROM?

A while back I had some intermittent trouble with the internal EEPROM of a dsPIC. Every so often, some value in the EEPROM would be found zeroed out on power-on. I tracked the problem down to when the ...
2
votes
2answers
296 views

How to ensure data integrity when using I2C with a PIC

When master device transfers a piece of data, slave will acknowledge back once the data has been received by slave. So it's not possible to ensure the data integrity by only polling ACK. I ...
1
vote
0answers
59 views

Read/write pointer in a DAQ

I'm trying to built a DAQ on a CAMAC system using Sparrow's Kmax 9.5 . The devices I am using(which must be rather old) are Sparrow SCM-301 SCSI - CAMAC Crate Controler Philips 7164 ADC Hytec LP ...
2
votes
1answer
551 views

How to “Mirror” or “Split” bar code data scanned by one USB scanner to two computers using Y cable? [closed]

I have searched this site and many others looking for a way to "split" or mirror data from an USB device (bar code scanner) to two computers. We need to do a parallel cut-over from a legacy asset ...
0
votes
2answers
291 views

Transfering RS485 data to server using ethernet

I'm extracting data from energy meters like V, I, KW, etc. Now I want to put this data in a dedicated server through Ethernet LAN so that meter user can monitor data from remote place by logging in to ...
0
votes
1answer
71 views

What's the best storage method? [closed]

I was wondering about what's the best storage method to save files to in order to save it from natural dynamics like earthquakes, tsunamis, or just to keep them along times... We all know that there ...
0
votes
2answers
582 views

Does a table that shows how 8b/10b encoding tries to ensure running disparity on a transmission line

In telecommunications, 8b/10b is a line code that maps 8-bit symbols to 10-bit symbols to achieve DC-balance and bounded disparity. In this case we take each 8 bit data and map it to a 10 bit symbol. ...
0
votes
1answer
771 views

How to connect a Printer WIFI module wires to an Arduino?

+ I’m a digital artist, found this HP printer on the street and wanted to use its components (motor etc.) on my projects. I was wondering if any of you know if I can use this WIFI module to ...
3
votes
2answers
172 views

Dual port, serial interface, buffered, shift register

I have an "interesting" problem. The proposed design, for a system I'm working on, needs to use 16x 16-bit serial ADCs and I need to interface the results of all 16 ADCs to a synchronous serial ...
2
votes
1answer
86 views

How to monitor data exchange on single wire?

I have two modules that communicate over a single wire. Where would I even start about monitoring the data without introducing any kind of interference to both modules? One of the modules has to be ...
-1
votes
2answers
155 views

Why is it not recommended to connect an output of a data acquisiton device to one of its input?

We have a DAQ board from Measurement Computing which has analog and digital outputs and inputs. It is written as a warning on it that one shouldn't plug an output channel back to the board as an ...
2
votes
4answers
185 views

Gui float data from micro controller

I am building a framework for a data acquisition system where the controller sends a (integer/float) data in to the GUI. I have done some ground work on data types and compilers and found out that ...
1
vote
1answer
65 views

Arduino data processing [closed]

I am currently looking into using the Arduino micro controller for data processing. I thought a good way for me to get practical experience and learn is make a sample application like a key logger - ...
-2
votes
1answer
95 views

Getting experimental motor data for AI based fault diagnostic scheme

I am working on a personal project, which is an AI based induction machine fault diagnostic scheme. I do not have the required funds to purchase the hardware, i.e. the motors and data acquisition ...
0
votes
1answer
771 views

How to reduce the data rate?(OV7670 + AL422B(FIFO) Camera Module)

I bought this module: OV7670 + AL422B(FIFO) Camera Module and I want to send the live video of the camera by this NRF24L01 but I have a problem. I don't know is the RF module suitable(NRF24L01) for ...
4
votes
2answers
177 views

Salvage data from a reverse connected thermocouple?

My SAE Baja team had a competition this past weekend, and we were using some thermocouples in order to get some temperature data on the drivetrain and engine. They were hooked up right before the ...
3
votes
1answer
251 views

Does forcing a data line to a higher power make it more resistant to interference?

A device I'm working on as a hobby project requires me to transmit a HDMI signal over cat5. The TMDS lines in HDMI are balanced but in order for me to continue transmitting the DDC signal with the ...
0
votes
1answer
82 views

Why to multiply all audio input with 1000/sqrt(sumsofInputSquare/datalength) [closed]

My thesis is about voice segeration. I am reading a code which has been used in this field. It most probably not needed but here is the fullCode I can't understand something which owner code did , ...
8
votes
3answers
199 views

Theoretical Clock Question

Just a theoretical question more than anything. Does the clock signal have to have the same width between peeks and troughs? A normal clock signal with data (below): A random clock signal with ...
1
vote
2answers
108 views

Wireless data acquisition for PC [closed]

I’m looking for an off the shelf device to send a serial stream of data (low speed ok) wirelessly to a PC. I’m guessing the easiest way is through a comm port or USB port. Distance is less than 25 ...