Computer hardware is the collection of physical elements that constitute a computer system
2
votes
0answers
66 views
Can electrical contacts 'burn out'?
Firstly, apologies that I'm not an electrical engineering enthusiast, I just have a piece of hardware that's stopped working, and I want to get it solved.
I have a midi keyboard, and some of the keys ...
-1
votes
1answer
59 views
What are the limitations of home-fabricating hardware by taking advantage of graphene only? [closed]
I'm really a newbie in electronics and materials science, but I was wondering about the new possibilities of circuits fabrication that come with graphene and the impact that all those things could ...
2
votes
1answer
100 views
Why is hardware multithreading not more common in embedded systems? [closed]
Hardware multithreading is common in personal computers (most Intel x86 systems support two threads per core), servers (POWER7, 4 threads per core; SPARC T5, 8 threads per core; SPARC64 VII+, 2 ...
5
votes
3answers
226 views
It is ok to use the PCB as part of the structure of a product?
The industrial and product designers I'm working with keep on coming back to the idea of using the PCB as an integral part of the physical structure of our products.
We have wall-mounted products ...
0
votes
2answers
70 views
Do solar flares affect the software when the hardware is turned off?
Do solar flares affect the software when the device is turned off? Like for example, would the windows os got corrupted even when the hard drive is off?
8
votes
4answers
275 views
How to choose a spacer/stand-off to maintain electrical contact?
I have a situation where I want a stand-off to maintain electrical contact between the PCB and the chassis it's attached to.
My question is, what's the best material and finish for this application?
...
1
vote
2answers
69 views
predicting the charcteristics of Filters
I would like to know one thing that say if you know Processor word length(TMS320VC5510 DSP)
it accumulator and guard bits can you make a guess about filter characteristics to be used for this ...
1
vote
1answer
48 views
How Verilog or VHDL projects are implement as physical chips?
In real life, how would I implement a circuit design using Verilog and VHDL as physical chip? Do I send the code to some third party so it manufactures the chip, like with PCB printing providers?
0
votes
0answers
32 views
Memory technology survey?
I did a comparison on what I could find about access times for different memory systems, could you please say if these numbers are approimately correct (I use an Altera DE2 FPGA)?
SDRAM: Slower that ...
5
votes
2answers
165 views
Start in Eletronics/Hardware with Eletronic or Arduino Book? [closed]
I've already received several suggestions about what some people read to start my development in relation to hardware / electronics. I already have a good knowledge in languages such as C, C + +, ...
0
votes
1answer
63 views
Why no JTAG connection?
This used to work before I installed Quartus v10 to ensure backward-compatibility. Now I get no hardware found in Quartus both v13 and v10. The USB-Blaster used to show up, then I installed Quartus ...
2
votes
0answers
125 views
How does a computer work? [closed]
I am a software programmer.I am very much curious to know about the behind the scenes of how actually a computer works.
By HOW I mean:On the hardware level.
My knowledge about software programming ...
1
vote
1answer
98 views
Correctly Interfacing to a Bidirectional Signal
Background
I'm designing an interface in VHDL that connects to a bidirectional signal. However my experience in the dynamics of Hardware Design is limited. What I have at the moment is below:
Within ...
-1
votes
1answer
134 views
Is it safe to clean out a computer with air compressor? [duplicate]
I need to clean my desktop, it is full of dust. Is it safe to use a compressor to clean it? I mean, can I have problem with static, water, dirty, moisture or other stuff been blown on the hardware?
-3
votes
1answer
93 views
Communication Speed, Tcp/Ip vs Serial [closed]
'm using a turnstile using TCP/IP Communication(RJ-45 cable) with my application.
And it's taking about 20minuts to finish some functions (Like: Selects in the database, and set some configuration of ...
0
votes
2answers
61 views
Target type std.standard.bit in variable assignment is different from std_logic_1164.std_ulogic?
Sorry if the format is not good but I'm new with that..
I'm trying to select a bit from an unsigned signal to be assigned to a bit variable but it doesn't work!!
I've tried to assign it in a process ...
9
votes
3answers
437 views
Why does digital equipment have more latency than analogue?
Is the explanation that the digital equipment takes longer to propagate? For instance, a software synthesis is very slow compared to a hardware synthesis.
1
vote
1answer
83 views
Hardware block to determine if a number is a multiple of 8
Can anyone suggest me an hardware block (I mean its structure/functional units) that is able to detect if a given number is a multiple of 8?
It seems easy but I haven't been unable to find a way to ...
-4
votes
1answer
98 views
How to design a hardware standard [closed]
I recently became to wonder- how are hardware standards such as the USB,SD card,PCI-E made and what would it take to make my own?
-3
votes
1answer
50 views
A strange keybord input-output problem [closed]
I wanted to ask about a problem that have with my keyboard.
Can you infer/explain what could have happened to it and how to fix that from keybords current behvior: some of the keys are outputing to ...
-1
votes
1answer
40 views
Is it possible to use Microsoft Software Radio (Sora) with Cellular signals?
I'm interested in learning about cellular data and protocols and came across Microsoft Software Radio (Sora).
Although this board is originally intended for Wifi signals (or so it sees) Is it ...
1
vote
2answers
132 views
Microchip DIY starting from Verilog
Given the Verilog description of a chip how what are the steps necessary to implement it in hardware and how would a person DIY something like this?
For a specific reference. I was looking at the ...
1
vote
2answers
94 views
Still struggling with the STM32F051C8T6 bootloader
I've been reading the information available in ST.com about creating a bootloader for a STM32F0xxx microcontroller, and it says the following:
"The bootloader is automatically activated by ...
8
votes
2answers
263 views
How can I check input of USB?
I have following wire as shown below, one end has male USB connector and other end has four wires. I know, when connected to laptop, the RED one acts as voltage source and BLACK as ground. If I give 2 ...
1
vote
1answer
105 views
How to connect sensor to PC?
I have made a sensor that produces a 4 bit output. I want to perform some logic based on patterns.
I was thinking if somehow I could give that 4 bit input to my computer, I could then write code to ...
2
votes
2answers
136 views
Are there strong but insulative screws?
Common through-hole power semiconductor devices, like TO-220 and TO-247, can be mounted to a heatsink by running a screw through the hole in the device. However, on TO-220 the hole is often ...
0
votes
2answers
94 views
Can this RAM bypass be prevented by making the particular memory controller “not idle”?
AbsoluteƵERØ showed me that memory can be bypassed at the memory controller. Can linux (be made to) detect foreign connections to the ram bus?
by showing me this patent: ...
0
votes
0answers
41 views
How to calculate instructions executed per second?
Assume a 5-stage pipeline executes a program where 30% of all executed instructions are branches. A single branch delay slot is used instead of branch prediction. branches are resolved in the ...
2
votes
1answer
131 views
Static vs Dynamic Branch Prediction
Assume a 5-stage pipeline is used in each of two processors P1 and P2. 30% of all executed instructions are branches. 60% of all branches are taken. Branch outcomes are calculated during the Decode ...
1
vote
2answers
161 views
Classic RISC pipeline question
Consider the following instruction sequence:
Add R3, R4, R5 (R4+R5->R3)
Or R2, R4, R5 (R4 OR R5->R2)
Add R1, R2, R3 (R2+R3->R1)
Assuming no data ...
1
vote
1answer
98 views
Listening in on ANT+ device communication?
I have TACX iGenius cycling trainer, which uses an ANT+ USB stick to control the resistance on the bicycle wheel. (You play a video in their software, and it matches the resistance on the wheel to ...
5
votes
2answers
709 views
Arduino Uno R3 hardware serial: peripheral interfering with the USB/Serial-converter?
I like to use the hardware serial port (pin 0 RX and 1 TX) to connect a bluetooth module.
Internally these pins are also ...
0
votes
1answer
55 views
Are there any DIP alternatives to the FT232R?
I'm currently using an Arduino on a breadboard, interfacing with it via a FT232R chip mounted on a breakout board. For my final design I'd ideally like to use all thru-hole components for ease of ...
7
votes
2answers
135 views
How can I mount a shield on a breadboard?
The non-standard spacing of the headers on Arduino boards makes it so the shields will not fit on a breadboard
From what I have read, there is no good reason for the non-standard pin spacing on ...
6
votes
4answers
197 views
How can I control more than 64 LEDs using a Uno?
I finished working on my 4x4x4 LED cube. I want to make a larger 6x6x6 cube. Is this possible ?
Which components should I use to control the LEDs ?
8
votes
4answers
144 views
How should I light up all the LEDs?
I am working on a 4x4x4 LED cube. I have connected all the negative terminals of LEDs in a horizontal layer to each other, and am using one Arduino pin per layer. I have connected all the LED positive ...
4
votes
2answers
100 views
Which version is my Ethernet Shield?
It seems that there are different versions of the Arduino Ethernet Shield available. How can I distinguish between the versions? How do I find out which hardware version I have?
Update:
Since Kevin ...
6
votes
2answers
592 views
What's the difference between INPUT and INPUT_PULLUP?
On newer Arduinos, one can set pinMode to one of three states: OUTPUT,INPUT, and ...
6
votes
2answers
44 views
Are there different Ethernet shields available?
Beside the w5100 chip powered Ethernet shield, are there shields available with other chips?
The w5100 seems to make a lot up problems. There are many Ethernet related problems documented on several ...
10
votes
3answers
359 views
What are the most common ways to fry an arduino?
I've fried two Arduinos before: one was an Uno, which I killed with too high of an input voltage, and the other was the ADK version of the Mega, which I never was able to conclusively determine what ...
3
votes
1answer
108 views
Can I use a USB keyboard with the PS2Keyboard library?
It is my understanding that most newer USB keyboards will not work with the PS2Keyboard library because they do not use the PS/2 protocol. Some, but not all, do have the ability to use the PS/2 ...
4
votes
1answer
766 views
Efficient way to get multiple analogue voltages out of an Arduino?
I've read in my research that most microcontrollers are not built with DAC outputs as they are expensive to include on silicon chips. Also applications that require analogue outputs typically need a ...
5
votes
2answers
177 views
How do I interface an XBee wireless module with the Uno?
I want to use an XBee wireless module with my Arduino Uno. How should I go about doing this? Do I need a shield like this one?
2
votes
1answer
374 views
Hologram project
I would like to do a project with an arduino that is a hologram screen. Is there a way to create a hologram project with an arduino? Is there any hologram hardware and can it be interfaced with an ...
2
votes
2answers
149 views
Interfacing a 16x2 Character LCD to the Arduino
A friend recently gave me a set of three (old) 16x2 LCD displays. (datasheet)
However, I'm having difficulty thinking through how to connect one to my Arduino. Particularly, each LCD has 14 (!) ...
5
votes
1answer
62 views
Capacitors on Arduino Due
An oddity I noticed in passing on the Arduino Due schematic, is the Atmel device requires a 4.7 μF capacitor on VDDOUT, but I only see 10 μF capacitors with 100 nF capacitors. How does this work?
6
votes
1answer
69 views
Problem stacking accelerometer and SD card shields on Arduino UNO
I have an ADXL345 accelerometer on a Makershield stacked on top of a Seeed SD card shield. Both of those are stacked on an Arduino UNO R2.
I've got each working individually, but when stacked they ...
8
votes
1answer
72 views
Can I connect two different 1-Wire Devices to the same data pin on an Arduino?
I have used DS18B20 temperature sensors many times and understand that they can be daisy chained on the same data pin. Could two different sensors be connected in the same manner?
For instance, could ...
11
votes
3answers
405 views
I burnt a pin. Now, what do I do?
I accidently shorted pins 10 and 11 with 10 set to output HIGH and 11 set to input. The pin 11 is not working. How do I figure out what component I burned?
Can the problem be fixed?
8
votes
1answer
281 views
Unlabeled Headers/Pins on Arduino Uno
Looking at my Arduino Uno, I noticed that not all of the pins/headers are labelled. I know what most of the pins do, but could not figure some of them (most not labelled at all, and one set labelled ...
