Computer hardware is the collection of physical elements that constitute a computer system

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Addressing the cylinders of a Hard Drive

I want to address the cylinders of a Hard Drive but I can't find a good manual of the pinout of the IDE interface. Anyone knows how to do that? I don't want to read/write anything in the disk, just ...
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54 views

How to build a video camera [closed]

For one of my project I need around 100 video cameras. But I cannot spend so much money for the cams. I'm thinking is it possible to build or assemble my own video camera for low cost. So what I ...
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1answer
58 views

Controlling a bank of relays

I have a project that requires me to control a set of relays (up-to 24 of them). The current setup is using Wago Speedway 767 field-bus modules. I'm just ramping up so I have to either figure out how ...
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1answer
74 views

What are these hardware components, and how do I control them?

My father received a video card in the mail last week. He gave it to me and I dismantled the card to get to just the video player and other components. The labels here are based on my experience ...
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69 views

In logic levels, why are both the driver and receiver needed?

Here is what my textbook has to say about logic levels: The mapping of a continuous variable onto a discrete binary variable is done by defining logic levels. [...] The first gate is called the ...
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70 views

Are there any registers that are read_clear in PC devices?

As we know, in x86 PC devices, there are some kinds of registers that are write_clear, that is, if we write "1" to the register, the register will be cleared. So I want to know if there are any ...
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2answers
116 views

How does DDR SDRAM work?

The figure is about how DDR SDRAM and DDR SDRAM2 works. After taking some time searching, I still cannot understand the figure. Can anyone please help me understand it? In this case, is the ...
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2answers
60 views

Hardware trigger sound card output [closed]

I would like to trigger the output of a sound card such that the device starts playing at a precise moment in time. Normally the sound card attached to your pc will start playing after it receives a ...
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1answer
59 views

Read / write hardwares values for FSUIPC (module for FS)

I'm building an auto-pilot module for FSX (flight simulator) with push buttons and rotary encoders. My micro is one ATmega88. My question is how I do the communication with FSUIPC (software to read ...
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3answers
145 views

How can I use/convert the touchpad, keyboard and screen of an old laptop to use them with a desktop PC? [closed]

Is there a common way for all the laptops' hardware, like screen, touchpad, and keyboard, that can be followed in order to use them with a desktop PC? What I need to do, to use screen, touchpad, and ...
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1answer
39 views

SATA in Samsung Exynos

Please take a look at the picture below. You can see that Samsung integrates SATA 3 into the Exynos 5 Dual. So does that mean that smartphones which use Exynos 5 will be able to connect to hard ...
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1answer
183 views

Tutorials on embedded programing using Zynq 7020 with ARM processor

Just as the question states. I have been having trouble being able to just test out the programming side of the ARM processor on the TE0720 board. I have been searching online for how to setup the ...
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1answer
113 views

What is wrong with this SPI implementation

I designed a system with RaspberryPi and STM32F407's, communicating with each other via SPI interfaces. For the last 3 months, tests were OK but yesterday a RaspberryPi and 2 of STM32F407's SPI ...
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2answers
816 views

What is this white board called?

I am just trying to to figure out what this is called. What I am referring to in this picture is the white board with all of the connectors and the led light attached. I am trying to purchase one ...
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1answer
76 views

Looking for replacement LED [closed]

I'm looking for someone who can tell me what kind of LED this is (The barcode is: 5541475) It's the blue LED from this projector: Acer K135 I'm trying to modify the beamer and replace the LED with ...
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183 views

Snapdragon 200 vs Raspberry Pi

I and a few friends are creating our own games console, and I would like to ask a question on our behalf. We're all teens, so making our own Hardware is implausible. So, we were considering Either a ...
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2answers
110 views

How to predict the memory size and gate count given source code

Excuse my poor English :-) I am in a software (for face detection) team and we co-work with the hardware team. If we give the source code to the hardware team, they will try to implement it with ...
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1answer
87 views

what is microcoded architecture in computer architecture

I want to know what is microcoded microarchitecture of an instruction set architecture (ISA) and why is it used? What is the difference between microcoded architecture and single cycle ...
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1answer
186 views

How to drive a video signal (of any kind) to a CRT monitor? What's the protocol, interface, standard, convention, etc.? [closed]

Say I am going to develop a video displaying computer componenet (call it a TTL chip, GPU, whatever). There has to be some basics on how to communicate with the monitor, or how to make sure the data ...
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1answer
66 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 ...
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3answers
339 views

Where to get/How to make a potentiometer with “clicking” steps?

Maybe you remember that very old (and sturdy!!!) electrical panels/machines had those big knobs that you could turn to fixed positions (steps) with a very unique clicking sound. I need to make one or ...
4
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1answer
349 views

What is the difference between JTAG and EJTAG?

I want to know what is the difference between JTAG and EJTAG? I know about JTAG as it's a hardware tool used to examine the memory and registers. Correct me if I'm wrong.
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STMicroelectronics EMIF08-1502M16 ESD Protection and EMI filter output for 16-bit LCD interface

Hello everyone we've designed a circuit which is about an LCD driving on SSD1963 IC with 16-bit interface and it was normally working but we tested the ESD of the product the screen was going halt. ...
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62 views

Easiest way to display 10 colours in a small area

This question requires a bit of background. I am building a resistor colour-band machine out of an egg carton. The idea is - you are making a project. You are unsure of a precise resistance value you ...
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1answer
106 views

Programming CC430F5137 using another microcontroller

I have a CC430F5137 and the board schematic all ready for my application to that requires capturing data over bluetooth. I wish to program the CC430F5137 using another platform except the conventional ...
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99 views

The effect of the increase in the number of transistors in a chip on a processor's peformance

everyone. I am doing a research on assessing the degree to which the number of transitors in chips affects the processor's performance in a certain environment. Of what I understand this far, in ...
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3answers
76 views

Frame memory (SRAM) size for an image

I am now reviewing a paper about hardware implementation and it says by cropping the 128*96-pixels from 160*120-pixels, the size of the frame memory (SRAM) can be reduced to 1/10. I don't get it. ...
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3answers
150 views

Why the frequency of single-core CPUs has stopped increasing? [duplicate]

I wonder why CPU vendors stopped producing CPU with frequencies above 3.0 - 3.6 Ghz and switched to using multi-core CPUs? What was the reason behind this step? Was there a physical constraint or the ...
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1answer
359 views

MikroC Hardware Interrupt

I am trying to program a PIC 16F876A using mikroC. I need the program to run when I push a button to a certain point, stop and wait till the button is pushed again before finishing. ...
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91 views

Beaglebone won't start with Rs232 connected

I have a Digilent PMODRS232 connector to do level control for my serial comms for a Beaglebone Black. The problem: When I connect the RS232 connector and I attempt to start the board by plugging in ...
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1answer
176 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 ...
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1answer
80 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
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1answer
203 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 ...
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273 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 ...
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91 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?
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4answers
445 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? ...
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2answers
87 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 ...
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1answer
116 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?
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37 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 ...
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2answers
246 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 + +, ...
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112 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
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0answers
142 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 ...
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1answer
207 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 ...
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1answer
824 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?
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1answer
125 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 ...
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2answers
122 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 ...
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530 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.
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1answer
89 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 ...
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1answer
112 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?
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1answer
53 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 ...