Questions tagged [data]

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

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1answer
44 views

Bank of register R/W pin issue

I am trying to create a bank of registers: This is what I have done so far:Now I need a pin Read/Write which will 'decide' if we are writing to the bank or reading from the bank but I don't know how ...
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4answers
96 views

How to collect data from LTspice

I am trying to collect data from a circuit and use that data for a regression analysis to get results. For my analysis purpose, one input needs to have different output (as the circuit I am using is ...
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1answer
53 views

How is data transferred through wires? is it [5,0] volts (DC) or is it [1,-1] volts (AC)?

So basically I am learning about how data is transferred through wires for a networking course and I stumbled upon this Ben Eaters video on this topic and I got a bit confused because I know that ...
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1answer
34 views

Difference between Li2YCY and LiYCY

I would like to ask about the difference between Li2YCY and LiYCY TP cables. As far as I know, the main difference is that the Li2YCY has core insulation based on PE and wrapped screening made from ...
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1answer
75 views

Information technology, digital data conundrum [closed]

Two children was born in a family. Both attended physics and math classes and got the basics right so they both know steady-state, increments, numbers, particles, photons, charges, voltages, linear, ...
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6answers
124 views

Is binary data in actuality a range of high and low to mean each in Computer Science [closed]

I do understand why 1 and 0 are used and why we have to make two states for data transfer storage and the rest. And why those two symbols and not off and on or some other means. It was most efficient ...
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1answer
52 views

How information is collected from a photographic sensor

For example, you have a sensor measuring temperature, light intensity or anything else. You have microcontroller reading your data and a sd card to save your data. I can understand how you can ...
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0answers
40 views

Algebraic Data Type

I understand the concept of algebraic data types, but I don't see in what context they are useful or when they would be beneficial. When should I consider using them and how are they useful in ...
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2answers
70 views

Why do we use a low resistors on Data lines for an ADC for example or a clock?

Why do we use a low resistors on Data lines for an ADC for example or a clock ?
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1answer
56 views

MAX233 problem with receiving data

I need to make serial connection between regular PCs and a 3.3v TTL device, I using the Maxim 233 which has internal capacitors. I have the PCs incoming TD connected to R1_IN and RD T1_OUT. The ground ...
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0answers
29 views

How can I simulate microwave radio link transmission?

My task is to simulate a two-way data transmission microwave link. The fixed parameters are distance, transmitter power, carrier frequencies, bandwidth, receiver noise figure, intermediate frequency, ...
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2answers
99 views

The results of my magnetic flux data from voltage recorded

For my electrical engineering senior design I created an experiment to test magnetic flux (more voltage) through a receiving coil. There is a large sending coil with A.C. voltage and a small receiving ...
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1answer
32 views

MQ-4 sensitivity characteristics - raw data

I need to convert Rs/Ro ratios of my MQ-4 sensor to PPM. For that I found the sensitivity plot in the datasheet (https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-4.pdf). However that is a pdf ...
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0answers
47 views

Data transmission through multiple IoT devices

We are implementing a device which will have multiple sensors inside multiple houses in our local area. Each house will have 1 device fixed at a place and data will be transmitted to one central ...
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2answers
108 views

Should I double data or power lines for UART device

I just have a quick question. I'm connecting PN532 NFC reader with RPi, for this I am using around 30m of UTP cable from my front door to rack with RPi, preliminary test showed the device is able to ...
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0answers
44 views

Leaky Bucket Example

I have an image below of a leaky bucket image that I am trying to understand for my telecommunications class, and I was hoping for some guidance/verification if my train of thought is on the right ...
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0answers
22 views

Connecting a smartphone android camera while charging the phone

I am hoping for advice. I have a android camera (the same as in this video: https://www.youtube.com/watch?v=AvWIp5vtsEU) and want to connect it to a Sony phone to see if I can use it as a streaming ...
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0answers
83 views

FPGA Connections

Im a senior EE major whose going into their senior design project. In the past Ive always struggled with data and computer systems. But as luck would have it that's what my senior design project is. ...
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0answers
46 views

How to calculate how much voice channels is being multiplexed

I would like to know how I could calculate from the bitstream which has a bitrate of 2,048 Mbps into how much voice channels is being used. I know that the syn has 32 bits and sign is 16 bits. Bitrate ...
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0answers
26 views

What are odd-even memory addresses in 8086 and how do they work? [duplicate]

I have recently started to look more into microprocessors at the hardware level, and i am a bit confused on what are the odd-even memory locations that 8086 uses. As far as i understand, it has ...
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1answer
69 views

How do modern CPUs treat memory operations? [closed]

How does a modern CPU treat memory reads and writes on the hardware level? With old 8-bit architectures all memory locations are read and written to one byte at a time, but how do modern CPUs that ...
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1answer
150 views

read negative voltage with mcp3008

how can i read a negative voltage by the mcp3008 ? , i tried to do that with this code but i I could not read it , i see that the most readings are 0.00 , this is my code : ...
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0answers
71 views

Should I solder the shielding wire (braiding) on USB cable for better data transfer?

So Ive cut the USB wire of my racing wheel (like xbox controller) and joined them again, to skip the breakaway USB cable part. While splicing, I Ignored the shielding wires, just picked them off and ...
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2answers
75 views

How do I turn off multiple data connections with a single switch? [closed]

I am pretty new to electronics but so I've been doing a lot of reading and whatnot. I have a question I can't seem to find any information on. I am modding a handheld device (the device in question ...
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1answer
61 views

using mcp3008I/P adc with raspberrypi

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1answer
39 views

Outputting correct data on shift register with clocks tied from microcontroller

I want to be able to output correct data from the microcontroller to the 74HC595 shift register without using the clock lines separately. This schematic matches my ideas for 16 bits of data: The ...
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0answers
14 views

RCS data analysis. [CADFEKO]

I have simulated radar cross-section (RCS) data of a small drone using CADFEKO. I'm using MATLAB to do the data analysis part. I have tried the histograms, heatmaps, error bars comparisons but still ...
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2answers
117 views

Why does a higher bandwidth allow a higher data rate [duplicate]

I have not taken any signals processing classes yet but I am interning at ATnT in the RF department. I do not understand why higher bandwidth increases data rate and the other answers did not make ...
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0answers
110 views

How to use the print step option in LTspice XVII?

I'm aware of the print_step option for transient analysis, but I can't seem to get it to work. I'm using LTspice XVII for windows 10 to simulate a DC DC converter for about 3s (It is necessary to do ...
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1answer
38 views

Can I use WP(Write Protect) pin of a USB flash memory controller to prevent tampering with its firmware/stored data?

I want to have an USB stick that I can make it read-only and insert it in any untrusted PC without risking a silent BadUSB infection. I was thinking about finding an USB stick that has this WP pin in ...
2
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1answer
69 views

Beginner trying to learn how to read start and end addresses for memory chips in hexadecimal

I'm new to electrical (construction management student) and am trying to learn how to read start and end addresses. The practice problem I have been given is in the picture, and I was wondering how I ...
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1answer
32 views

How are these Data Buffering Methods same or different from each other?

I am trying to understand the operation of a Serial Bus protocol converter chip. It connects with the serial bus on one side and on the other side it provides its data on the MCU host interface. ...
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1answer
35 views

R65C02P4 (6502) microprocessor R/W pin state while suspended

I'm building a circuit with a Rockwell R65C02P4. When the RDY line is pulled low, the manual specifies that the address lines will reflect the current address. It doesn't specify what the R/W state ...
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1answer
93 views

Import Parametric Sweep data from LTSPice into Matlab

In LTSpice, I am running transient simulations with input 2 parameters (Amplitude and Frequency) being swept. The initial graph of all the data looks like this: Obviously it is hard to tell what is ...
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1answer
43 views

Binary Data encoding and decoding format

I am trying to understand what is the meaning of this data coding format as shown in the following image. It is not simple binary to decimal conversion. Can anyone tell how this conversion formula ...
0
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1answer
36 views

Stream Audio and WebCam Video through Radio Frequency [closed]

I and my friend would love to make a better communication system between us since his internet connection is not the best and neither is mine. We are 20 km away from each other. Our project is to ...
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2answers
311 views

How do i measure Ethernet signals on an oscillocope

I have a device that works on 100 Mbps using a CAT5E cable. Any idea of how can I show the data communication (capturing the signal integrity eye pattern) of this device using an oscilloscope (4 GHz/ ...
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1answer
73 views

Altium Designer Libary Ref Field Missing

I'm trying to create a MySQL database for my Altium company library. I've created a MySQL database with utf16 encoding that contains tables for each category of components. Here is an example table: <...
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2answers
113 views

Two USB ports for one IC

I have to get two USB 2.0 ports connected to a single chip delivering data and power. If only one port is connected, this connection and power should be forwarded to the IC and if both are connected ...
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2answers
88 views

Chosing microcontroller for a sensing project

I am upon chosing a microcontroller for a PCB board project. MCU collects data from capacitance to digital converter (from a capacitance sensor) via I2C and I would like to pass that data to a host PC ...
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1answer
83 views

Read serial data from unknown source using Raspberry pi

I have a fuel dispenser, which has one keypad and two displays, each display has three of 7 segment LCDs. I want to control the fuel dispenser with a PC or a phone. The way to do this in my knowledge ...
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2answers
495 views

Why do lightning data cables have chips? [closed]

Is there a need for these chips?
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1answer
32 views

Relation between spectral leakage and the frequency of harmonics of a signal

I'm currently studying "Data Acquisition". I read that when we have frequency/spectral resolution equal to a natural number, there will be no spectral leakage, for none of the harmonics. However the ...
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1answer
46 views

minimizing waiting time for 8051 port state

I made myself a project with standard 8051 microcontrollers (AT89S52 and AT89C4051) and will be making more with the same due to price and availability. When data is being sent from one GPIO pin from ...
3
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1answer
228 views

SAR ADC DAC Question

Hi, This is an extract from MT-021 from Analog Devices about SAR ADCs. In particular, it shows a circuit in which the Track(Sample) and Hold block of the SAR architecture AND the DAC of the SAR ...
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0answers
561 views

Capacitor DAC - Charge Redistribution

I was reading about capacitor based DACs for a SAR ADC in an Analog Devices pdf(https://www.analog.com/media/en/training-seminars/tutorials/MT-021.pdf) and I saw this About the highlighted part, I ...
4
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2answers
241 views

What does the prefix “+/-” indicate before the data line names?

At this link there are specs of a converter with the following excerpt: What does "+/-" sign indicate(mean) above before TxD or DATA? As far as I know TxD pin/line transmits and RxD receives the ...
2
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1answer
46 views

ramp-up “guard” time (data receiver)

I have looked at multiple datasheets of multiple radio modules including one I'm using (HM-TRP) and none of them specify a ramp-up or a ramp-down time. According to research, this is known as the ...
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3answers
156 views

How to better understand binary data streams as electric signals?

I'm aware that at any step of any computer process the input of a user/program (that gets translated from code to machine language and then to cpu instructions), is represented using both electrically ...
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2answers
68 views

How to convert sensor signal to temperature from the data available from the datasheet?

I have a Pyrometer datasheet showing signal percentage (0 to 100%) with the corresponding respective temperatures (from 0 to 200 °C) and current values (from 0 to 20 mA) in the whole measuring range. ...

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