Computers

I have one pretty new ACER 5552G laptop that cam with with Delta Electronics ADP-90CD D8 power supply that has grounding practice different from other laptops I have seen (normally grounded or floating): The power supply output (otherwise floating) – side seems to be connected to mains ground through 1 kohms resistance on the power →

I have earlier written about grounded laptop power supply problems. Other popular laptop power supply configuration used is floating output. There are power supplies without ground, for example some Apple laptops and many other brands. The power supplies where there is no ground on connection on the mains side are for sure built in this →

My friend Henri Sundelin told few days ago that that he had became tablet-crazy and decided to get himself a proper tablet. Not those proprietary iPad or Android stuff, but a real computer. Ubuntu (Precise) on Samsung Slate 7 article tells that the Windows 7 that came with it was a truly poor excuse for →

Quantum computers could revolutionize the way we tackle problems that stump even the best classical computers. Single atom transistor recently introduced has been seen as a tool that could lead the way to building a quantum computer. For general introduction how quantum computer work, read A tale of two qubits: how quantum computers work article. →

Is it “The New iPad?” “iPad HD?” “iPad 3?” Who cares? All we know is this: It’s here! iPad 3 4G Teardown In this video ifixit crew covers the biggest changes to the new iPad, including the fancy-pants 2048×1536 Retina Display, A5X system on a chip processor, updated 42.5 watt-hour battery and 5 megapixel HD →

How many servers does it take to power Amazon’s huge cloud computing operation? Like many large Internet companies, Amazon doesn’t disclose details of its infrastructure. Estimate: Amazon Cloud Backed by 450,000 Servers article tells that a researcher from Accenture Technology Labs estimates that Amazon Web Services is using at least 454,400 servers in seven data →

Many laptops are pretty well known for having terrible audio interfaces. There are usually noise and grounding issues. A recent post Yet Another Dell Laptop Audio Grounding Problem blog posting documents a well known and horrendous audio problem found on many Dell laptops. I have faced similar noise problems also on other laptops as well. →

Is it possible to write a JavaScript program in no more than a tweet‘s length? A website called 140byt.es says it is. The site has an implementation of “almost” Tetris to prove it. Its title is “Binary Tetris“, and it only has two types of block and there’s no rotate, but it works. The blocks →

Many laptops are pretty well known for having terrible audio interfaces. There are usually noise and grounding issues. A recent post Yet Another Dell Laptop Audio Grounding Problem blog posting documents a well known and horrendous audio problem found on many Dell laptops. I have faced problems with Dell laptop ground loops. And I have →

Windows 8 Release Expected in 2012 article says that Windows 8 will be with us in 2012. Windows 8 Features And Release Date article expect Windows 8 to be launched sometime in mid-late 2012. For details how Windows 8 looks take a look at Building “Windows 8″ – Video #1. For latest details check also →