Questions regarding architectures or design of specific parts, not consumer-related questions.

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0
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0answers
53 views

How a lockstep processor is used? [on hold]

Can somebody please give an example of how a lock-step processor is employed in practice? I mean how the firmware of such a processor is written?
0
votes
1answer
28 views

Where do active display converters get their power from?

I have bought a mini Display Port to HDMI/VGA/DVI active converter. It works on VGA, but VGA is broken [dimmed screen? and I don't know how to fix that] on the monitor (so my only option left is HDMI)....
2
votes
1answer
79 views

What is the more frequent error in DDR Memory?

this is about DDR memory data corruption and not about STUCK address or data lines. If we have a good DDR with no memory stuck issues and we perform lots of writes and reads which type of error is ...
1
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3answers
117 views

Homebrew Redundant PC Power Supplies

I'd like to have redundant power supplies to power an array of four hard drives. Each drive uses 5V at .6A (3W) and 12V at .45A (5.4W), for a total of less than 10W each. The four drives will have ...
3
votes
1answer
49 views

Step-up Voltage for Bluetooth Dongle to Increase Range?

Here's a bit of background to my enquiry: Recently I've had a project that involved me upgrading my laptop as much as possible, to get it to a standard where I'd have to buy a new machine if I wanted ...
56
votes
12answers
16k views

How can we be sure that computers will never accidentally switch a 0 by a 1?

I've read a bit about the construction of a digital computer in Shocken/Nisan's: The Elements of Computing Systems. But this book says nothing about certain electrical aspects in computers, for ...
1
vote
1answer
42 views

Is depth and number of stages the same measure for a CPU pipeline?

Is it true that the depth of a CPU pipeline and the number of stages of a computer pipeline are different measures? There is not much info about it if I google or look in my books. I think that depth ...
1
vote
2answers
66 views

Computer inside aluminum plated wooden box

I have a wooden box and the outside is plated with aluminum. I'm trying to install a computer (the components) inside this box, but I'm worried about the earthing. Usually the screw holes in the ...
0
votes
1answer
23 views

What does short circuiting a RST front IO header do?

My motherboard has a connector to enable the use of a front panel RESET button: I would like to simulate the press of the button (equivalent to short circuiting the wires) by a Raspberry Pi, by ...
-1
votes
6answers
187 views

Will I be able to understand how computer works when I finish electronic engineering? [closed]

I'm taking a course that is focused on electronics but I'm not sure if it will cover how a computer works in depth. For Example I don't want to know "X sends data to Y and store it, send to Z" But ...
0
votes
1answer
62 views

Screen communication from a 8K RAM

I have recently completed the Nand2Tetris 1 on Coursera which lets you create a basic computer. For a while now I have been trying to physically implement the things I learned to create a fully ...
0
votes
1answer
91 views

Moderately easy computer circuit to build? [closed]

I have a project were I need to make a circuit, and I want to make a circuit that I can put into my computer, maybe in the PCI-E slot. I was thinking of maybe building a capture card or sound card, ...
1
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3answers
138 views

Is it possible to replicate the ENIAC using logic gates

Can one rebuild a small scaled model of the original ENIAC computer using only logic gates?
0
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1answer
68 views

Introductory Digital logic/design question

How can I abstractly describe a sequence of instructions/function at a register transfer level, given a certain set of instructions. For example, here is the type of questions that we would be asked ...
0
votes
1answer
77 views

voltage regulation for car computer

I am looking to install a home PC computer for the car. I am concerned about voltage regulation. The car voltage can range from 10 - 14V, so would the standard PC power supply have voltage ...
-1
votes
2answers
157 views

Could a computer technically run without time measurement?

I just asked myself if a computer could technically run without time measurement? With time measurement I mean the human-invented method to measure season and day/night cycles: a year has 365 days,...
20
votes
4answers
3k views

Why do CPUs typically connect to only one bus?

I found a motherboard architecture here: This looks to be the typical layout of motherboards. EDIT: Well, apparently it's not so typical anymore. Why does the CPU connect to only 1 bus? That front-...
-2
votes
2answers
90 views

Should I get EE or CS major? [closed]

I don't know whether this is the place to ask this. I'm sorry if this is the wrong place. I'm a first year university student in Electrical Engineering and Informatics School. In my second year, I ...
0
votes
1answer
74 views

Develop a system to differentiate laser pointers from the ambient light based on the information collected by two arrays of digital FPA detectors

I would like to develop a system to differentiate laser pointers from the ambient light based on the information collected by two arrays of digital FPA detectors embedded inside the cavity of a ...
0
votes
2answers
68 views

How does a computer control electric circuits? [closed]

I would like to know how it is posible for a computer command to phisically start something like a motor or spotlight when they are on such a different scale. How can such a small signal have such a ...
0
votes
1answer
121 views

Confused what computer architecture is in real [closed]

I am quite sure that this is a question which will be marked as "primarily opinion-based" but I would still like to ask it here only as you do not get so many intellectual, experienced and skilled ...
-3
votes
1answer
78 views

Tune radio with laptop [closed]

I want to sintonize (tune) local FM and AM radio stations with my laptop. I know nothing about electronics and thought this was the place to put my question, I don't know any site more relevant to ...
1
vote
3answers
205 views

How can a powersupply have a large input volt range

I see that computer power supplies that can take a voltage input of anything between 90V and 260V at a frequency between 47Hz and 63Hz. Meanwhile it can output power at a very precise voltage. How ...
0
votes
1answer
164 views

What is Front Porch and Back Porch of a video signal in CRT display? [duplicate]

What is a Front Porch used for? What is a Back Porch used for? What does it mean by active video?
2
votes
5answers
155 views

Fan Needs 12V, only have 9V

I recently bought a 12V small computer fan(about 1"X1") and it was running rather slow when I checked it with a 9V. The package says that the fan requires 12V to run at an optimized speed, so is there ...
0
votes
1answer
86 views

Error-Detecting Code and ASCII Character Code?

As ASCII character code uses seven bit to encode 128 characters and most computers manipulate an eighth-bit quantity as one byte and ASCII characters are stored one per eight bit, and an additional ...
0
votes
1answer
239 views

How can computer replace PLC in industrial machines? [closed]

I am having internship in a semiconductor manufacturing company and learning about machines in front-end section. Technicians say that the machines all use computers as they process multiple complex ...
0
votes
1answer
96 views

How do ALU flags communicate with the rest of the computer?

How are ALU flags connected to various parts of a computer? I've just finished building an 8 bit computer in Logisim that can add subtract and compare... and am wondering how I can make it multiply (...
0
votes
3answers
174 views

How are alphabetic characters programmed into a computer?

I'm no cs student, I'm a programmer. I have a couple of questions and a few assumptions that I will make here (correct me if I'm wrong please). From my understanding is that all the sequences of 1 ...
15
votes
5answers
4k views

Breadboard computer [closed]

Is it possible to make a simple computer entirely with breadboards and basic electronic components? Is it feasible to, for example construct a scientific calculator in this way?
2
votes
2answers
476 views

Using PC audio to listen to electrical noise on power line?

I have done a bit of research on digital filtering and I was wondering if it would be possible to use the audio hardware of my computer tu listen to the electrical noise on my powerline ? If it is ...
0
votes
1answer
152 views

How much faster would optical computation be?

If (when) we could figure out a way to do computations with light as opposed to electrons within circuits, how much faster would our computers be?
1
vote
2answers
89 views

Piezo contact mic into iMac - avoid signal spikes

I've wired an external piezo as contact mic to the TRRS 3.5 jack of an iMac and it is working fine - BUT the signal will just randomly stop after hitting the contact mic several times too hard, so I ...
3
votes
4answers
2k views

Is BeagleBone Black a microcontroller or computer?

I started working on BeagleBone Black, and I cannot find out whether BeagleBone is a microcontroller, or some kind of computer? If computer, what makes it a computer? I worked on different Cortex-M ...
1
vote
2answers
111 views

Is it possible to create a computer without sequential circuits?

Do computers (or FSMs) absolutely need sequential logic, or can it be done theoretically without? This seems impossible. Any proof of why it's not the case? (Showing that there can be no memory ...
1
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2answers
98 views

Historical electronic components used in computers

Early computers used vacuum tubes and relays as active components to process information. Later on, transistors replaced those as the main components used in computers development (transistorized ...
-7
votes
1answer
107 views

Is It Safe To Turn On a Dropped Laptop [closed]

My mother threw my Macbook out the windows and it landed on a flower pot. It has stayed intact however I'm reluctant to turn it on at risk of the hard drive getting damaged. Is it safe to power it up,...
1
vote
2answers
84 views

Is it OK to use the USB 5v pin as power source?

I am doing some stuff in my case and I need a power source for one LED from inside my case. I looked up and there are two +5v pins on a USB header inside my case. Is it OK to use them as power source?...
1
vote
0answers
81 views

find cache hit rate for direct mapped cache memory

I have this practice exam problem which I am having trouble with. I have gone over many slides but haven't been able to really get it. The question is I currently have an 8 block main memory with ...
1
vote
1answer
598 views

multicycle datapath vs single cycle datapath

I have a fairly simple question but have not been able to find a good answer googling. I understand how pipelining works by having 1 cycle per step, each instruction takes 5 cycles and they start ...
2
votes
1answer
65 views

Buck regulator to match an analog voltage

In desktop computers, it's common to have headers that control fans with a 0-12V analog output, capable of up to 1A. This works fine for one or two fans, but with more than three fans, you can exceed ...
0
votes
1answer
48 views

600 watts regulated DC for 3 seconds [closed]

In my area, due to frequent storms, there are frequently short mains power cuts lasting a second or two at most. While the shorter several-millisecond outages don't usually cause issues, the longer ...
0
votes
1answer
62 views

What are the meanings of the fields of this cache memory?

I have a cache memory simulator with this cache memory shown. The cache size is 64 bytes and the block size is 8 bytes. What is the decomposition into fields? If block size is 8 bytes, then log(2^...
0
votes
2answers
80 views

Why does my mainboard power the cathode to turn the Power-LED off?

Close to all desktop motherboards have a pin header that is supposed to power an LED on the front of an enclosure with to indicate that the computer is on. In the documentation for my board, these ...
-2
votes
1answer
108 views

Why do laptops conduct electricity through the battery when they're plugged in and fully charged?

Electricity from an outlet goes through laptop batteries even when the battery is fully charged (to the best of my knowledge). This degrades the capacity of the battery (or so I've been told). It ...
0
votes
3answers
10k views

USB Flash drives up to 2TB? [closed]

I found USB Flash drives on aliexpress.com up to 2 TB. So much people bought them, and I'm reading feedbacks and 90% says: "It works perfectly, thanks", just a few customers have left a negative ...
1
vote
2answers
2k views

How to control the current output from usb slots of computers?

Is it possible to control output from a computer usb port so, for instance if I have a usb led I can make it blink or do whatever with it. Whenever I send a high signal it would glow and whenever I ...
1
vote
1answer
384 views

Micro and Nano Memory, Calculate Reducing Bits?

I ran into a question: in digital system with micro-programmed control circuit, total of 32 distinct pattern operation signal is ...
0
votes
1answer
33 views

Which are the spec bits in this cache?

I have a direct mapped cache of size S with the line size L. The cache is physically indexed and tagged. The physical address is 50 bits, numbered from 0 to 49 (with 0 being the least significant bit)....
0
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1answer
92 views

What is the difference between a virtually tagged and a physically tagged memory system?

I study computer architecture and this question came. What is the difference between a virtually tagged and a physically tagged memory system?