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

learn more… | top users | synonyms

0
votes
1answer
23 views

PS2 / SMBus communication

I have an OEM touchpad I want to connect to a PC. The drivers for this touchpad are widely available. I asked the manufacturer for the original datasheet, and it says there, that the touchpad ...
2
votes
1answer
45 views

Shift Register Vs Multiplexer

I am not sure about an implementation. I've a multiplexer 8 input, 1 output and 3 select signal. One of these selects signal sequentialy acquires all value of a bit vector. Now I can choose 2 way. ...
1
vote
1answer
66 views

Modeling languages for Hardware platforms (embedded systems) [closed]

I'm looking for some modeling languages in order to design hardware platforms in the context of embedded systems. I already had a look at the following: AUTOSAR UMLMarte SysML I wonder if there ...
1
vote
0answers
15 views

Sony Ex Data Acquisition Frontend

I am looking for information on a third party driver for the Sony EX-IF10 data acquisition frontend. I know sony made drivers for Matlab and Labview as it was advertised in promotional materials. ...
1
vote
1answer
36 views

Executing push $reg using one instruction on single cycle datapath

So I know how to push a register using two instructions, but how can I push a reg onto the stack using one instruction? Here's the single cycle datapath I'm seriously stuck here
1
vote
2answers
78 views

What would I call this specific type of knob?

I am looking for a particular type of spring-loaded knob, similar to the thumb wheel you would find on an old Blackberry - but I cannot seem to find an appropriate name to track one down. I'd like ...
4
votes
1answer
91 views

Secure signals on boot time to prevent unwanted operations

How can I be sure that at boot time my module won't get random values to it's control signals and write to an address* before I reset the module? *(or anything that shouldn't be done before reset) ...
0
votes
2answers
43 views

Given hardware specs: How do I calculate the data bandwidth [bits/s] of this system?

I'm currently trying to buy a hardware that is supposed to extract your brain waves. In other words, a data transmitter. I am looking at the hardware spec and I am uncertain as to how I should ...
-5
votes
2answers
111 views

Why do Nintendo 3DS games have 17 pins? [closed]

I took a good, hard look at one of my Nintendo 3DS games today, and I realized that there are actually 17 pins on the game that connect with the console. Why? I was under the impression that ...
2
votes
0answers
57 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
votes
1answer
45 views

Serial Connection Not Working on Modified Router [closed]

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
votes
2answers
125 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
votes
1answer
80 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
votes
1answer
115 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
votes
2answers
107 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
votes
3answers
78 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
votes
0answers
52 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
vote
1answer
143 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
votes
1answer
113 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
votes
2answers
145 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
votes
1answer
63 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
votes
1answer
86 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
votes
1answer
258 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
votes
2answers
79 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
votes
0answers
72 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
417 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
votes
2answers
100 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
votes
1answer
90 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
685 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
votes
1answer
45 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
281 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
vote
1answer
176 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
votes
2answers
828 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
votes
1answer
90 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
votes
0answers
247 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 ...
1
vote
2answers
122 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
vote
1answer
143 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
285 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
72 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
675 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
863 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
vote
0answers
124 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
votes
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
votes
1answer
132 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
votes
1answer
205 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
vote
3answers
83 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
166 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
votes
1answer
513 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
votes
0answers
104 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
votes
1answer
189 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 ...