Questions tagged [computer-engineering]

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Can I weld a copper pipe into a CPU heat sink for better cooling?

I have an old laptop which I revived with the addition of a SSD. The problem now with this laptop is that it gets very hot causing thermal shutdowns in the middle of work. I thought of a lot of ...
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0 answers
24 views

I'm getting an Incorrect Plot for a Diode Curve

I am trying to build the following simple diode curve tracer: Here are the parameters of the setup: R1=R2= 1kΩ R3=R4= 5kΩ Vfg: F= 100Hz VPP = 16 Opamp 1 &2 = UA741 DUT = 1N4007 *Oscilloscope = ...
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-1 votes
5 answers
122 views

Why do we need more powerful computers nowadays? [closed]

In 1969, NASA was able to conduct its moon mission using a computer with 4KB of RAM. So, why do we need more powerful computers with more RAMs nowadays?
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1 answer
38 views

Create a virtual board as often seen on YouTube

I have seen a lot of YouTube videos that use a virtual board for teaching. For example, in the video link below, how can I do the same thing? What are the steps in details in order to be able to ...
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1 answer
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What is the difference b/w <<endl; & ;? [closed]

Language = C++ There are 2 types of statements I noticed for taking in output. 1) ...
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3 answers
154 views

How to visualize isometric parallel projection?

I read the definition of Isometric Projection from this pdf that Projection plane intersects each coordinate axis in which the object is defined (principal axes) at the same distant from the origin. ...
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1 answer
45 views

Similarities Between Mechanical Engineering and Computer Engineering [closed]

Im a high school student and I am writing an essay regarding my passion in various subjects of science, i chose engineering. I love learning about computers and coding etc and I'm also a great fan of ...
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1 answer
49 views

Inside/outside test of any point on 2D plane?

Suppose I have one plane $Ax+By+Cz+D=0.$ I want to test $(x, y, z)$ is inside of this plane or outside. My attempt:1 Then draw normal N on that plane which point away from the observer Image1. If $Ax+...
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2 answers
186 views

How to visualize angle of projection in Oblique Parallel Projection?

We know that in Oblique Parallel Projection Point $(x,y,z)$ is projected to position $(x_p,y_p)$ on the view plane.Projector (oblique) from $(x,y,z)$ to $(x_p,y_p)$ makes an angle $\alpha$ with the ...
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2 votes
0 answers
27 views

Are there tools to design and test experimental hardware and firmware through emulation?

I'm a programmer and I'm interested in testing an idea I have for a SATA intercept hardware device. I'd like to design a custom piece of hardware involving SATA connections, splitting of signals etc. ...
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21 votes
10 answers
9k views

Why not put servers in a refrigerator?

Recently I was thinking about home improvement, and one idea that is haunting me is that I could use some kind of refrigerator for gaming consoles and laptops. The obvious benefit is that it maintains ...
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1 vote
0 answers
87 views

How to measure time taken to run SCPI commands? [closed]

We all know that every program takes time to run. Normally in Python, the time built-in Python library would be sufficient to measure time-taken to run code. How may I determine how long a SCPI (...
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4 votes
2 answers
360 views

Microscope Camera Windows NT

I'm not sure this is the right stack exchange community to be asking this, but I have a little issue. There's a great microscope-camera from Carl Zeiss (AxioCam HRc) which I got for free and would ...
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3 answers
518 views

how can I control 2 stepper motors with RS-232?

Hello everyone this is my first post to the forum. I want to control 2 stepper motors using RS-232 as a way of directly communicating with step drivers from my desktop. I am new to communication ...
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0 answers
27 views

Has there been any deliberate implementation of combinational logic soft error correction in any consumer-level product, like a CPU/microcontroller?

It is well known that many error detection, mitigation, and correction methods, such as parity or ECC, have been available in large memory banks, like for RAM, for decades now, and even in CPU caches ...
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0 answers
46 views

2 complement code and Carry, Zero, Overflow and Negative Flags

Assuming I have a negative 8-bit number represented in 2 complement code, let's say -12, what number can I add to it to set all flags mentioned in the title (Zero, Negative, Overflow and Carry), or at ...
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0 answers
27 views

Arduino Programming IR Sensors and Actuators

Create the circuit below (Arduino) You are supposed to use the following code (must download correct library if IDE is too old): ...
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1 vote
3 answers
46 views

Placing an accelerometer on arbitrary position and define this as the new coordinate system

I'm working on a small home project and I'm looking to use an accelerometer for tilt sensing. I would like to be able to place it anywhere on the object. If I place it in a way that the coordinate ...
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3 votes
0 answers
40 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 ...
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0 votes
2 answers
80 views

Exclusive Or Circuit in SimulIDE

I have been testing basic circuits in SimulIDE. I created a basic exclusive or circuit that works most of the time. There are two inputs. When both inputs are off the bottom LED does not light up, ...
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1 vote
1 answer
40 views

If you have a small fan that blows hot air, and a larger fan that blows cold air against it, what happens to the hot air?

For context, I have a laptop that has a fan that sucks in cold air from the top on the left side (for cooling the cpu), and a fan that blows hot air out the bottom on the right side (for cooling the ...
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0 votes
0 answers
18 views

Macro to atomic scale software

Is there a software that exists that takes a macro object for example a MacBook casing and its composition (Aluminum) and allow you to zoom between the macro scale (a fully rendered MacBook) and the ...
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2 votes
5 answers
209 views

What sensors/methods can be used from the roadside to determine if a truck is loaded or empty - without weighing it?

What sensor, using what physical principle, can penetrate a closed rectangular object like the trailer of a truck and tell if the space is empty or loaded? Why is this question relevant? One of the ...
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-1 votes
1 answer
60 views

Are pixels not squares and more like rectangles?

When I open Paint, I change the size to 500x500. It appears more as a rectangle than a square. Has anyone else had this happen? Is there an explanation? Not sure if this is a thing that differs on ...
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-1 votes
1 answer
28 views

How is the most basic display driven?

I am curious how taking the most basic display such as this OLED one that works with the ardunio is driven: i.e. We are using just a clock and data line to drive a 128x64 pixel display. The pixels ...
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2 votes
2 answers
848 views

Screw type associated with COM port/DB-9

DB9 female port often have female slots for two screws to secure the male plug onto it. What is the type of this screw? Word 'screw' is mentioned 7 times in Wikipedia DB-9 article but not the type. ...
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2 votes
1 answer
447 views

How can I calculate overcurrent from over voltage for the AP9101C IC

I designed a battery charging, protection, and boost circuit for a project I am working on. However, I made a complete noob mistake and forgot to find the overcurrent value for the battery protection ...
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4 votes
0 answers
32 views

Why are the outter tracks of a magnetic disks more stable?

In our digital computers class, the professor mentioned that the outter tracks of a magnetic disk is more reliable because the outter bit are "bigger". Isn't the packing density of a magnetic disk ...
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0 answers
58 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 ...
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0 votes
1 answer
373 views

How to get similart Geomagic two stl file deviation in free Cloudcompare software?

I need to compare two STL (Dental model Scanned) files and find the deviation between their points, SO this two STL files have different boundary, so i already used the GEOMAGIC Control software for ...
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0 votes
1 answer
74 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?
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1 vote
1 answer
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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 ...
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0 votes
1 answer
67 views

How exactly do noise canceling headphones work?

I purchased a pair of noise canceling headphones today and I was just wondering how exactly they are able to cancel out background noise?
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1 vote
0 answers
19 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 ...
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0 votes
1 answer
30 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 ...
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1 vote
1 answer
505 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 ...
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0 votes
1 answer
49 views

What is the mechanism of transition in applications of finite state automata?

Just began studying automata. I've already seen several examples of the applications of finite automata: pattern matching, automatic doors, etc. And so far, I understand the logical connection between ...
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1 vote
0 answers
223 views

Multiple sensor data to WiFi visualized on React Native app: Guidance [closed]

Objective: I want to connect multiple sensors to an item of equipment and visualize the data real-time on an iPad. Mock of Desired Output: Question: I need advice on the best methods to use to ...
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  • 111
1 vote
0 answers
25 views

Confused about information on a state transition table

I'm working with a State Transition table with a variable I can't identify. Here's the table: I'm pretty sure "a" is the present state. "b" is the next state and Sx and Sx+ are the inputs. ...
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1 vote
1 answer
127 views

How to introduce the CONSTITUTIVE equation into structure mechanics [closed]

Suppose I have stress and strain relationship and it can be simplified to the equation $\sigma=Function(\epsilon)$. This is the CONSTITUTIVE equation of the material I want to do research. Assume ...
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2 votes
3 answers
204 views

Memory and Transistors

I'm asking this question as an early computer science student who is beginning to get way more interested in really low level stuff/computer/electrical engineering. I am very unfamiliar with hardware, ...
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1 vote
1 answer
243 views

Relation between residual stress and von mises stress calculated by FEA in comercial software

Suppose we do nonlinear structure mechanics computation. In each time step, we can get the results and can get Von Mises Stress at each node of the mesh. Can we say this number also means its ...
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1 vote
2 answers
886 views

How can I vaporize metals?

What are some common ways that I can vaporize Metals into a vacuum chamber? How can I keep these Metals in a gaseous state?
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0 votes
1 answer
234 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. ...
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-1 votes
1 answer
141 views

How can I convert (AF36) hexadecimal to 2421 BCD? [closed]

How to represent numbers 10 to 15 in 2421 bcd? The original question is this:
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3 votes
0 answers
97 views

What is the proper way to handle string-to-float decimal truncation in IEEE 754? [closed]

This is not a StackOverflow question because the software engineers do not have appropriate math skills to answer an IEEE 754 question and thus must be answered by an IEEE tutor. I had to implement ...
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1 vote
1 answer
73 views

How did scientists develop the stencils that made even more precise processors than they had previously?

The history of computers seems somewhat pervasive since there are so many steps in modern manufacturing and so many changes in trends with transistors over many years. Grasping how we got to our ...
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2 votes
1 answer
65 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 ...
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  • 133
4 votes
2 answers
2k 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 ...
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  • 141
2 votes
1 answer
405 views

MSP430 - Semaphore - C language

I'm dealing a C code here which is run on MSP430 LaunchPad. What I need to do here is modifying the program, so that at the push of the button, the micro cycles through 4 different modes: LED1 ...
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