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

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Free online courses - Hardware/Software Design of Embedded Systems [on hold]

I am looking for help, thoughts, ideas and information about free online courses related to the topic. Perhaps this questions looks silly for you but I am in a challenging position, I am an Electronic ...
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53 views

Possible hardware for a single DOS application? [closed]

I am currently working on a project that uses a DOS application as the UI to interact with a hardware. I would like to move that application to a simple hardware and include that in the hardware box, ...
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0answers
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Trying to modify the monitor switch to power up a Raspberry PI [migrated]

I have a Xerox "a7-17i" monitor. That I am trying to modify it so when it's powered on the monitor and the Raspberry PI gets powered ON and when it's powered OFF it will turn off the Raspberry PI and ...
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1answer
40 views

Attempting to connect a simple memory chip to a computer

not too long ago a friend jokingly bought me this simple toy which basically consists of a "push-me button" that creates a laughter sound when pushed. How the hardware looks I pulled the speaker out ...
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51 views

What is the best setup for a 5Msps, 12bit ADC to Beaglebone-black setup?

My goal is to make have a beaglebone-black based precise sampler, for analog signals around 1MHz. Knowing the BBB ADC remain stuck at 0.2Msps, I'm not looking into this option - and hence a choice of ...
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1answer
35 views

Comparator power dissipation

I want to calculate the LM339 comparator power efficiency, so I thought the best way is to calculate the output RMS power and the Power dissipation and the quiescent(DC) power then will get the input ...
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1answer
107 views

Microsemi IGLOO2 FPGA design resources [closed]

I want to start working on IGLOO2 FPGA, and I'm new to FPGAs. I searched throughout the internet for tutorials and training courses for Microsemi devices. It has a bad support and resources compared ...
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0answers
59 views

How to implement autocorrelation (matched filter) in hardware?

I have an understanding of how to implement autocorrelation via the means of software, but after an extensive search on the internet I could not find how to implement it with hardware/electronics. In ...
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2answers
52 views

Weird behavior when simulating decoder using modelsim

In my introductory Digital System design course. We were asked to simulate a 4 to 16 decoder using VHDL and modelSim.Everything compiled correctly. However, when I try to test bench my program, I get ...
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2answers
114 views

Is Embedded software a good way to do embedded hardware? [closed]

What are the advantages and disadvantages of using an embedded software to do embedded hardware?
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1answer
38 views

Need wireless communication technology options when long range is necessary [closed]

I need to find a way for my cell phone app to "ping" a device (that doesn't have a service plan, etc.) and make it vibrate when pinged. Range needs to be at least 1km reliably. Also the device needs ...
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0answers
21 views

Digit Recurrence vs Newton Raphson in hardware

in a lot of books and papers i've seen a lot of comparison between the algorithm mentioned in the title of this question. As far as i understood the digit recurrence is slow but usually requires less ...
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2answers
69 views

How many addresses are required for this system?

If a system has RAM containing 16K bytes with each of them needing their own distinct address and on top of that it has 16 peripherals and they each require 2^4 distinct addresses, then how many total ...
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2answers
33 views

Ways to communicate GPS coordinates to a central server wirelessly from a wearable device

I am currently looking at designing a wearable device for a client, which can communicate GPS coordinates back to some sort of central server (to then be sent out to other communicating devices such ...
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1answer
96 views

How some bits are turned on while others remain off

How does the computer turns physically different bits on and off? I mean that the electricity flows to the transistors in order to turn them on or off but there are many transistors so what part in ...
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1answer
47 views

LCD screen is blinking when connected to batteries [closed]

I built a ~5V battery using: series of 3 x 3.7V batteries put in parallel 3 x 1.2V ...
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1answer
46 views

XMC module in electronics industry

What does XMC module stand for in hardware engineering? I have seen industry mention this but does it have a fullform?
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1answer
134 views

Proper Method of Powering Nokia 5110

I am considering getting some Nokia 5110's for use with my Arduino Nano board but I am in a pickle because I can't tell the correct way to wire it. Some people say to power it with 3.3V and only ...
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1answer
71 views

Unable to understand Verilog syntax

I found an example Verilog code as following: module test #(parameter p=1) (); localparam [1:0] lp = ~(p)'(1'b0); endmodule I'm unable to undestand the ...
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2answers
79 views

Are neuromorphic computers considered digital computers?

This might be a pretty simple question, but I am wondering if neuromorphic computers using non Von Neumann architectures such as the IBM TrueNorth chip are still considered digital computers. I have ...
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2answers
456 views

Single wire two-way serial communication - hardware configuration

I have several servos that can give feedback data that I want to read. The servos use special protocol so I need to use Rx/Tx pin on my Arduino Mega to communicate with them. The problem is that a ...
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4answers
172 views

8-bit per cell memory?

I'm a software development student, who want to improve its hardware knowledge. I'm reading Structured Computer Organization by Tanenbaum. In the chapter 2, the author says the following: "[...] ...
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1answer
84 views

How to start with replacing a hardware with FPGA/microcontroller? [closed]

I'm currently stuck with how to start with a project I took on. The project is that I emulate the results given by a program when connected to a hardware using the same program and a ...
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1answer
45 views

Camera on cellphones

Why resolutions when we recording video or taking a picture with our cellphone camera are different? Video recording resolution is always so smaller compared to our photo resolution. Is it hardware ...
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2answers
49 views

Best Hardware for Accurate Point Tracking System

Here is what I am trying to accomplish: In the middle of a room, I have a mechanism with a laser diode mounted on it that can be moved in all axis by a motorized pan/tilt head type device. This ...
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0answers
49 views

Hardware characteristics of on-chip SRAM instances

I am looking for details on the hardware characteristics of various microcontrollers. In particular, I want to answer some of the following questions w.r.t. the on-chip SRAM: What type of SRAM is ...
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1answer
364 views

A simple FIFO buffer in verilog

I have decided to implement a FIFO buffer in verilog (for fun). Here is my primary prototype you can say : It will consist of a register bank or memory. Each register will be of size N and there ...
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1answer
101 views

Where can I find correct documentation of old floppy drive formats?

I have an old drum machine with an ancient proprietary 3.5" SONY floppy disk drive with no information on the device itself that I have seen. The performance is spotty and it's very picky about disks. ...
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51 views

Help Designing Microcontroller 2xRj45 (RS232) + 1USB-Serial

I am trying to design a microcontroller that will have 2xRS-232 RJ45 ports (not PoE, just serial communication) and a 1xUSB Type B female (for 5V power and programming). I am not exactly sure, but ...
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3answers
172 views

Computer peripherals to immediately (<5ms) detect digital input state change in C# programs

The C# application I'm working on needs to be able to be able to call a function within 5 milliseconds of a digital input signal's state change (0V = off, 5V = on). Rather than using software to ...
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1answer
58 views

Sound Box - Custom Message

I am trying to put a custom message on a "sound box" in a stuffed animal. I asked this at the Reverse Engineering SE and they pointed me here. Here is a picture of the circuit board: The blue wires ...
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1answer
75 views

What knowledge and equipment do I need to build this device?

OK I am a Software Engineer dealing with both low level and C/C++/Java code with a Masters in Software Engineering but no knowledge of Electronic Engineering whatsoever. I wish to build a device that ...
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2answers
57 views

Is hardware handshaking not available when using a USB to RS232 adapter?

As far as I understood there is two type of hand shaking. Hardware and software. For hardware handshaking other pins of RS232 connectors used. Does that mean of we us a USB converter we cannot ...
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3answers
2k views

What are the 'knuckles' on through-hole LEDs and photodiodes for?

I am using an IR LED and a photo diode, and I have designed the PCB according to the specifications that I found on the datasheet - i.e. hole sizes for the pins being 0.6 mm. However, on these ...
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2answers
166 views

Finding number of don't care conditions

I'm new to these forums and have very little background in electrical engineering. I'm trying to figure out the number of "don't care conditions" based on an input of two numbers, each 0-9, for ...
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56 views

Aircom air connectors, what are they called?

Does anyone know what type of connector this is?
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2answers
2k views

How to test if my program for SPI communication is working correctly?

I have developed a simple code for learning about SPI in Arduino Due. The code is compiling properly and now I would like to learn the next step on how to test the code with the board and get the ...
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1answer
587 views

Identifying a component on the circuit board of a mobile phone

I need to identify this component which I found on a circuit board inside a mobile phone.
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1answer
120 views

Hardware reference design for a phone [closed]

I want to make a simple box with one button. Pressing the button will send a SMS Text message to a preprogrammed phone number. I have not designed a phone hardware before so looking for some simple ...
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1answer
255 views

how to convert 1.5v 150ma to 5v 2 amp?

i want to convert 1.5 v 150 mamp to 5 v 2 amp. Is this possible ? if possible how to make circuit of this ? thanks.
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2answers
345 views

Is it worth it to go full stack as an embedded engineer? [closed]

In big companies, they tend to separate embedded engineers by disciplines such as firmware, hardware, interface software, and PCB layout. Still, I think it's more fun to work 'full stack' and build ...
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2answers
291 views

Is one accelerometer enough for detecting tilt/orientation of a rigid body?

I posted this question earlier in physics.stackexchange, but I think this is actually the best place for it. I’m not familiar with sensor hardware, and I don’t really know how an accelerometer works. ...
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0answers
83 views

What connector is this?

I need a cable for something I'm working on, but I don't want to just cut off the connector for the existing cable, can you help be identify the type of connector this is so I can buy a new connector ...
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4answers
84 views

integer frequency division

I have an 800 Hz square wave and would like to generate other frequency square waves from it: (100, 200, 300, 400, 500, 600, 700) Hz. I'm aware of "divide by 2" frequency division, but how would you ...
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1answer
264 views

Why is the refresh rate of most LED LCD TVs 60Hz?

Can anyone explain to me why (at present day) the refresh rate of most LED LCD TVs is 60Hz? Is there a physical limitation to the technology of LED TVs that make it much more expensive to implement a ...
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1answer
160 views

Implementing Integer Division in hardware

I am trying to figure out how to create an efficient way to divide 5 bit numbers in hardware (using registers, Shift Registers, Comparators, Muxes, basic logic gates, bit shifters, bit extenders, and ...
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1answer
135 views

Power multiple 5V/12V devices off a single transformer? [duplicate]

I have these devices in my cabinet (Q-Panel) that have these power requirements: 21V 1.2Amp 5V 500mA 12V 1.5A 12V 1.5A 48V 1.25A Obviously I can't do much about #1 and #5. I want to be able to ...
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2answers
127 views

What tasks does Graphics hardware perform and what steps does it follow to do so

I am not intending to go into high end GPUs here. That is too advanced. What tasks does a basic graphics hardward perform? By basic perhaps we can go back in time and see what it did in the early days ...
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1answer
471 views

How to interface with credit card terminals?

I am considering doing a project that involves a machine that can accept credit card payment automatically from customers. Think of it as a vending machine, that accept credit card. I want to ...
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0answers
144 views

Combine Bluetooth Buttons (Volume up / Next, Volume Down / Previous)

I have a question regarding the control of a bluetooth device, which I would like to connect to some old headphones. Bluetooth SMD Module - BC127 There are some pins on which I can connect the ...