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

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2
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49 views

What could this PLA be doing?

The picture below shows a PLA, I have done part (a) and found out that; F0 = A0 xor B0 F1 = A0B0 + (A0' + B0')(A1 xor B1) F2 = A0B0(A1 + B1) + A1B1 What may this circuit be doing, I can't see a ...
0
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1answer
40 views

Serial Connection Not Working on Modified Router [on hold]

I have a Sagem F@ST 2504 router. Following the advice from OpenWRT wiki (http://wiki.openwrt.org/toh/sagem/fast2404) I managed to solder the header pins in the correct place. I've attached pics below. ...
0
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2answers
76 views

Controlling AC mains using Arduino and removing control easily

I am planning to for an Arduino to read status of a switch, and accordingly switch on and off AC appliance, for a demo purpose. I want to add a feature to it of easy recovery to manual switch control. ...
0
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1answer
78 views

What determines the maximum rotational speed of a hard disk drive?

Through my background research I understand that the limit on the rotation of a hdd is largely the product of heat and the specs of the physical disk, but I am puzzled by the round numbers advertised ...
0
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1answer
57 views

tlc5947 LED driver without constantly occupying uC pins

I am working on TLC5947 chip to control 24 RGB Leds to create different patterns with them. My concern is, I have to keep giving command to SIN, SCLK, XLAT pin of microcontroller every loop to keep my ...
0
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2answers
99 views

Online arithmetic with radix 2 addition

I am having trouble working with OLA(online arithmetic addition) radix 2 SD(signed digit) addition MSDF(most significant digit first). If I have an 8 bits range unsigned number and a redundant and ...
0
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3answers
74 views

What type of motor is this?

So I recently bought a motorised pedicure set thinking it would be some amazing thing. However, I used it once and the batteries (4 AA) died after about half an hour and not before getting ...
0
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0answers
35 views

Marsboard A20 camera module

Is it possible to use this camera module (or any other same camera module, preferably PAL) with new MarsBoard A20? According to specs, it has only CIF camera headers and some other EXT headers. So ...
1
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1answer
131 views

counter that MSB toggles every 2 seconds [duplicate]

I want a counter that the Most significant bit toggles every 2 seconds, and gets values 0 and 1.So for example it will have 0 for 2 seconds and after 1 for another 2 seconds etc.. I need it like that ...
-2
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1answer
110 views

rescale a binary number [closed]

How I can decode a 6 bit binary number(up to 32 in decimal) to a 7 bit binary number(up to 100)? I want to change scale from 32 to 100 scale. I am using VHDL-93. For example if the binary number is ...
0
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2answers
142 views

Why isn't homemade hardware a thing [duplicate]

What prevents someone with some funding from creating and selling their own hardware? Let's ignore the legal side of things and assume the only limit is technology. Could someone create something ...
0
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1answer
60 views

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 ...
0
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1answer
79 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 ...
0
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1answer
178 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 ...
0
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2answers
74 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 ...
0
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0answers
71 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 ...
2
votes
2answers
251 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 ...
0
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2answers
77 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 ...
0
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1answer
79 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 ...
2
votes
3answers
496 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 ...
0
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1answer
42 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 ...
0
votes
1answer
263 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 ...
1
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1answer
148 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 ...
5
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2answers
825 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 ...
-1
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1answer
82 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 ...
0
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0answers
227 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
116 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 ...
1
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1answer
127 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 ...
2
votes
1answer
247 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 ...
0
votes
1answer
69 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 ...
4
votes
3answers
511 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
votes
1answer
641 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.
1
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0answers
116 views

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. ...
0
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1answer
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 ...
0
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1answer
124 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 ...
0
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1answer
146 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 ...
1
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3answers
79 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. ...
2
votes
3answers
163 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 ...
0
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1answer
426 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. ...
0
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0answers
101 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 ...
3
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1answer
187 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
82 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 ...
3
votes
1answer
220 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
298 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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2answers
120 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
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4answers
497 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
96 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
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1answer
146 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?
5
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2answers
269 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
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2answers
173 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 ...