Questions tagged [computer-hardware]

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3
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0answers
25 views

Is there a solution for USB Multiplexing, i.e. passing data between different devices by sharing/splitting a USB connection?

Forgive me if my title is vague, I will attempt to explain my issue. I don't know if such a solution exists and I have tried searching without any luck. I would like to utilize a passive USB protocol ...
-1
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2answers
65 views

Tiny white spot continuously appearing on the Laptop screen

As I mentioned in the title, I am continously seeing this white spot, which as per my assumption, based on some Googling, is a pixel turned on, on the Laptop screen. But the thing is, if I visit any ...
0
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1answer
29 views

Is it possible for laptop speakers (versus external speakers or headphones) to pick up radio signals?

Heard a strange sound a couple of times last week while web browsing. It sounded very much like I was listening to someone's microphone (e.g. the sound was static-y, it sounded like papers were ...
0
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1answer
22 views

Climate control in data centers

I'm a student currently working on a market research project on the HVACR industry, and I'm having trouble nailing down a simple answer to these questions (it may be there are no simple answers, as so ...
1
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0answers
31 views

What purpose do the “angled tabs” on a PCIe bracket serve?

In the PCIe specification (see page 75), the "short arm" of the bracket has two cutouts; one for the slot that the retaining screw fits in, and another square cutout that has additionally had the ...
1
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0answers
14 views

Network Switch with Togglable Ports

I'm a software engineer that works on custom embedded devices. I program these devices through a typical RJ-45 ethernet cable. In most cases, I can connect my computer to these devices through a ...
0
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0answers
34 views

Sealing thrips out of monitors

I don't know if this is the correct forum as I can't find any suitable tags. We operate some of our equipment in fields inside tents. Our big problem is thrips/thunder flies. They somehow make it ...
0
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0answers
17 views

Ryzen 5 2600x Rev. A versus Rev. F: What is difference in revs?

My son built a computer a few months ago with Gigabyte m/b and Ryzen 5 2600x. He bought the parts at a local Computer Super-Store and built it. I liked it so much I bought the parts at the same local ...
0
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0answers
57 views

How to add external sensor data to pictures, canon DSLR, hot shoe, electronics

Here's a challenge - I am trying to add different sensors data (height,temperature,distance by laser) to pictures i take with a canon DSLR camera. Would it be possible to connect different sensors ...
0
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1answer
41 views

How long do external hard drives and the data they contain last?

How long do external hard drives and the data they contain last in case of lack of any use after downloading the data and the condition of storage having a room temperature, average humidity of 60-70% ...
0
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1answer
40 views

Memory management in for multiple cores of a processor

I come across a question-'How big an address space should I allocate for each ARM A53 core in a mobile processor?' What is the answer for this? Does it refer to memory management in SoC?
1
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1answer
3k views

How to detect what wattage that my Windows laptop is receiving via USB-PD?

I don't know too much about USB-PD. I understood that USB-PD requires negotiation between the charger and the receiver. So probably my Windows laptop (Dell XPS 9570) should be able to know the current ...
2
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1answer
84 views

What happens when an LCD screen shuts off?

I read about how an LCD screen works here, and it made me wonder what actually happens when the screen shuts off. Based off of this, I can think of several possibilities: Electricity is supplied to ...
1
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0answers
16 views

motion gesture and axis definition

I read something about defining hand gesture, which include mid-air hand gesture (e.g a peace sign with the two fingers moving one after another), touch-based gesture (e.g. on touch screen), and ...
0
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1answer
27 views

How can I transmit signals from pre-amplifiers to a laptop nearby using bluetooth?

I am trying to collect signals from preamplifiers (Aquarian Audio preamps, PA-4) and have them sent to a laptop nearby wirelessly, I have not found a dedicated device for this process, and the ...
1
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1answer
167 views

How to find the smallest change in voltage

You are comparing different A/D converters that will have 3.2 V and -3.2 V as their positive and negative reference voltages, respectively. Out of the following, converter _ can resolve the smallest ...
2
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0answers
21 views

DIY Thermal Solution [closed]

What would be the best way to design a sealed computer containing a gas or liquid circulated by a fan/pump to cool the components? ( With a metal case ) Then the computer would not be susceptible to ...
-1
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2answers
163 views

What is the white colored connector circled in red in the picture of a laptop motherboard called?

This is a picture of the back of my laptop (An ASUS S550CM) with a motherboard/HDD/RAM access panel removed. The white connector connects the motherboard with the laptops back panel which in turns ...
0
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1answer
140 views

How does punched card computer circuit design work?

I am trying to understand the underlying process of computer circuits from the beginning. I am reading about punch cards. I have come across several youtube videos and articles which are useful. ...
2
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1answer
44 views

Computer “Ports”, port scans and daemons

If I do a port scan from the internet, do I hit a bundle of wires that are physical ports into the motherboard (like a PCE port)? Or do I actually go into the operating system and interact with the ...
3
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2answers
1k views

Use two passive CPU coolers on one single CPU?

I aim on building a silent, completely passively cooled PC, with no moving parts at all (I am aware that it is cheaper to go for an inaudible computer instead, using low speed fans. This is not the ...
2
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1answer
79 views

Why laptop keyboard has so many bus lines?

I changed one laptop keyboard on the new one and while changing it I noticed that it has 30 line bus. But from my VLSI practice, I know that keyboard can use only 1 data line and 1 clock line (PS/2) ...
1
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1answer
54 views

Similarities between OBD-II and VGA

I'm working on a project to make a Heads Up Display in my car. I need a way to present my project in front of my class, for I obviously cannot bring my car into the presenting room. My professor ...
2
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0answers
83 views

Connect a GPU to a mobile FPGA using

Please indicate if this question would be better asked on other fora, I'm not an engineer but computer scientist, and have very little experience with FPGA's / ASICs. As far as I understand from ...
1
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1answer
221 views

How is “16.7 million colors” in a display calculated?

How is "16.7 million colors" in a display calculated? Also, is it a software or a hardware thing (the 16.7 million colors)?
0
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2answers
90 views

Why are corporate printers so large?

I often seen printers like this in offices and schools. Considering how we can have printers small enough to fit on a desk, why are these printers taking up half a room? What are they capable of doing,...
10
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7answers
2k views

How to make factory machine hard disk drive more durable? How much its estimate life span?

I wonder how can I make hard disk drive more durable? Specifically, I works in a factory environment. And almost every few months, hard disk drive in some of the factory machine are corrupted, and ...
0
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2answers
160 views

How do mechanical keyboard switch mechanisms relate to the force graphs?

I'm not sure if this is the right place to ask, but I'm curious about what contributes to the asymmetry of force-distance graphs provided by keyboard switch manufacturers? For example, it is common ...
4
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2answers
5k views

How do we specify among a shim, spacer, and washer?

Our small radio-control model cars have shims, spacers and washers. I am tasked with clarifying the manual and getting parts naming consistent. We have these items from less than .5mm thin up to 1/8"...
0
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1answer
26 views

Deep out-of-order buffers

I was reading about the new Intel Xeon Phi processor on Intel's site https://software.intel.com/xeon-phi/x200-processor/remote-access and ones of its features is: Highly-parallel performance: ...
1
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0answers
21 views

Generating electromagnetic signal using CPU clock [closed]

Laptops have processors running on few GHz clock. Is there a way to generate electromagnetic signals in that range using some software or coding? Say generating 2.4 GHz signal if the CPU runs at 3 GHz....
1
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1answer
1k views

Is it possible to send ESC/POS commands to EPSON TM-T88IV Printer through Windows command line?

I am interested in learning more about ESC/POS commands. I have an EPSON TM-T88IV printer connected to my PC via parallel cable at port LPT1. Connected to this printer is an APG Cash Drawer. The PC is ...
-1
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2answers
94 views

Computer engineering: Physical time clock timing [closed]

I would like to write software that can reliably get the "relative physical time", with the highest resolution, and lowest overhead as possible. By "relative physical time", I mean, for example, the ...
4
votes
1answer
436 views

Using python to send automated commands through a serial-usb-cable adapter

I have an old peristaltic pump with a 9 pin male sub-d socket labeled Gilson Serial Input Output Channel (GSIOC) that connects a master device to devices with RS422A specifications, or RS485 ...
1
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1answer
71 views

Have there been successful attempts at using a computer's heat to warm something up? [duplicate]

Computers get hot. So usually we try to make them less hot. But what if instead of trying to cool down a computer we used that heat for something else? Not necessarily any thing big like a whole ...
3
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2answers
701 views

Why is minimum pressure specified on a PSU water cooling circuit?

I work in consultancy and I am designing a product for a customer. The customer has requested a specific PSU. I have contacted this PSU manufacturer and they request 6 L/min of coolant flow and ...
5
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1answer
4k views

What grade of Neodymium magnets are commonly used in hard drives?

I want to buy some magnets, but the ones that I have found on online shops are mostly grade N38. They are pretty cheap, but they need to be as strong as the ones found in a hard drives. I am afraid ...